I'm trying to play Doom II, and I'd like to change the default settings to the WASD setup or even an Xbox controller. I've googled this, and not had much luck finding something that works with the GOG version. Any help would be appreciated. I'm not as tech savvy as I'd like to be so please use small words. :)

Thanks,
JSmith

If using the vanilla GOG version, use CTRL-F1 to change which keys DOSBox use.
Or use a source port that uses WASD.

Many thanks to you, philscomputerlab. Now back to enjoying the Doom!

I find it works even better with a source port. Higher screen resolution so sprites keep their detail at longer range which makes the game look so much sharper (plus you can optionally enable various post-processing effects if you wish, and some ports allow you to swap the sprites for 3D models like Quake, but I prefer to keep the sprites myself).

Chocolate Doom keeps the game vanilla, as it was created, so all the bugs that were in the original game are still present in Chocolate Doom, but the advantage is a native Windows engine instead of running it via the DOSBox DOS emulator, so better performance.

ZDoom is a common one and spawned some offshoot ports, too. I use the GL offshoot of it, GZDoom. Modern mouselook and WASD, plus with vertical aiming instead of relying on the game to auto-aim along the vertical.

Zandronum is designed for multiplayer, should you want that.

There are others, too.

This causes DOSBox to crash for me, but just for this game.

Update: It works, but not when using OpenGL. Many keys won't work. How do you bind the left shift key, for example?

I can vote for Chocolate Doom as well. Bear with me, the thought of using a source port might be intimidating at first, but Chocolate Doom actually runs the game nearly exactly the same way as you would want to using DOSBox, only it runs better and is easier to set up. Also, you should be able to bind all keys.
I usually try to play classic games as close to how it would have been playing these games at their original release, and I was very, very happy with Chocolate Doom in that regard.

PS: On my notebook with an Nvidia graphics card the DOSBox keymapper also crashes when using OpenGL. It seems to be an old bug that was never fixed.

Thanks for the recommendation. I'm usually not really too keen on maxing textures/resolution and changing the game significantly away from how it was originally. If I use OpenGLnb I don't get that crash... though I have no idea what OpenGlnb is exactly.

That's misleading. Choco renders at 320x200 and scales that to the resolution closest native resolution of the screen using integer scaling factors preserving the original blur-o-vision.

I know it is a stupid question but I can't find any shortcut to setup (other than language setup). Wher it is located?

OK found the solution.

Problem is GOG puts all DOOMs to the same forum. If you have DOOM 3 BFG edition you maybe mislead by answers to questions regarding standalone DOOM and DOOM II.

As for controls - you change them in DOOM III menu. Relevant controls (movement, shoot, use keys) are the same across all three games.