Anyone know if Fallout 1 & 2 work windowed??

I managed to make Fallout run windowed but it was a complete waste of time : it's 640*480 on the top left of the screen, non movable.

Duke is that with Fallout 1? If so how did you manage it. Dodgy windowed is better than no Windowed for me. If games arn't windowed I simply never get round to playing them :(
I havnt tried Fallout 2 yet. But i used multiple Windower applications with Fallout 1 all of which made the game produce an error. Any ideas?

Yes, it was Fallout 1.
I think I managed to do that by launching the game via 3D Analyzer, forcing Windowed mode in its options (bottom of the first column). You can grab it here. BTW, I'm not responsible about the crashes which may occurs in other games or tweaking unrelated options : I already had a BSOD yesterday.
Don't forget you still have to alt+tab to release the cursor.

Completely agree...
I'd say that most of us are running widescreen hi-res monitors, and having to play games streched out and low-res doesn't sound very appealing. Currently, i'd only be interested in games that would support a windowed mode or widescreen resolutions, any possiblity in getting this to happen?
My dream for gog was to have older games run in windowed mode so i could minimize or open the window at my choosing, and the window would maintain the game's original aspect ration.

DOSBox does this, as already mentioned, so you are covered for those games.
The other games are not running under an emulator, however, and so doing what you are asking for ALL games sounds like an impossible task. Remember that GOG do not have access to source code for the games.
As wonderful as it would be, I don't see it as a reasonable thing to have any kind of expectation of. To my mind, GOG's resources are far better spent (a) assuring that the games they have work well in their original form, and (b) working at getting more games signed up.
Especially given that the proportion of widescreen users, whilst increasing, is nowhere near to being a majority. Most people simply do not replace working monitors all that often, and most monitors last for much longer than widescreen LCDs have been around and affordable. Even Valve's hardware survey of 1.77 million gamers currently has widescreen users as just 25.81% of the total.
Stretched graphics are horrid, but most widescreen users will have the facility through their video drivers to ensure that 4:3 games display in that aspect ratio in the centre of your screen. That being the case, I struggle to comprehend how this constitutes a deal-breaker (so I trust that the proportion of that 25% of users for whom this is a genuine issue is probably on the extremely small side).

Couldn't we just temporarily change our monitor resolution? Or would that not work?
I don't know if this would work on any of the games from GOG (but I've done it on a lot of older C&C games that I have), but in XP you just right click on the icon on the desktop (or wherever it is), say Properties, and then add -window or something to the end of the location, if I remember correctly.

Well unless you are already running games in a window, it's the game that sets the full-screen resolution, so changing this outside of the game would have no effect on the game's display. That works because the developers of those games specifically added that feature. It's not some kind of universal option, so -window simply won't do anything unless the developers made it do something.

Okay, thank you. I wasn't 100% sure.

Doing it for all games will be nearly impossible. Not completely, but nearly. DOSBox'ed games and other emulated games can obviously already do this, but at the cost of needing an entire simulated machine. For native Windows games... Oy.
If I can devspeak for a moment: theoretically you can do this by running the app through a shim layer for OpenGL/DirectX calls (and a handful of remaining native calls that deal with resolution, like GetSystemMetrics()). This is much easier said than done, because windowed and full-screen mode are really quite different. If the app isn't going through DirectDraw and you need to divert GDI output it's probably even harder (shimming GetDC() isn't for the faint of heart). For OpenGL games it should be slightly easier because OpenGL is much more agnostic when it comes to its output (you'll notice that most OpenGL games will offer windowed output themselves, when DirectX games often don't). It occurs to me that the Wine project might have some useful material/knowledge, though, since they do this sort of translation on a much bigger scale.
In short, this would be a lot of work. You'd run into a huge number of compatibility issues you'd have to fix for each and every game to make sure it runs with the, hum, let's call it the Fenestrator for now. In all honesty, installing a virtual machine and running that in windowed mode would be a lot easier, even if it's a very resource-heavy solution (and you can run into licensing issues). It's challenging and interesting from a technical POV, but it's a big project and one that would likely always remain in beta, since you can never be sure it won't fail on the next game and require updating.
You're much better off looking for a community patch for a specific game and/or a remake that possibly upgrades the textures and overall look as well (Freespace Open does this for Freespace, for example). Many classic games have such projects, especially the early 3D games.
Edit: it occurs to me that a potentially simpler solution is to offer a virtual display device that windows through to a real one. Benefit is that the display technology used by the game no longer matters, but it's only really simpler if you don't offer any 3D acceleration (otherwise you have to emulate that, and you're no better off) and while a lot of old games can probably run fast enough with software acceleration on modern hardware, some won't (and it might look crap even if they do). Plenty will even refuse to run if they don't detect hardware acceleration, though you could fake this. You are still left with the problem of making the games run on your virtual display device rather than the real one, but a lot of games will allow you to select your display adapter regardless, and for those that don't, forcing a display adapter is probably easier than changing all calls. The big counterargument to the "potentially simpler" argument is that developing a stable kernel-mode display driver that can pipe its output to a user-mode window and will run on all the major Windows flavors is not exactly a cakewalk -- and an unstable display driver can crash the entire system pre-Vista, so you better get it right.

As nicktonic said in the 2nd post, ATI has support for image scaling options that will maintain aspect ratio.
These options can also be found in the NVIDIA Control Panel too. So if your gripe is only on the aspect ratio, these settings would solve the problem for you:
1. In the NVIDIA Control Panel under Display task, select Change flat panel scaling.
2. Select the monitor you are using
3. Choose the option, Use NVIDIA scaling with fixed-aspect ratio

Redneck Rampage and Stonekeep have just been released. If you want to play'em windowed mode, just type Alt+Enter :)

bump

http://www.gog.com/en/wishlist/site/make_every_game_playable_in_windowed_mode_at_all_resolutions_supported_by_the_game

Am I the only person that has a monitor that has a option to switch between 16:9 and 4:3? It´s a matter of 3 buttons I have to press on the monitor itself.

... Or just enable the bloody thing in GPU settings.