Hellascopic: Bah - I thought you were onto something there with fs2open, I got as far as downloading it before realising that I've got freespace 1, not 2! :(
I bought freespace 1 instead of 2 as that's the one with nostalgia factor for me, fs2open looks great though, and it turns out freespace 2 is now open source and free to download?
I'd already tried freespace.exe looking for extra setup options - it gives you a choice of 'direct3d' or 'no direct3d' - and that's about it!
Well, I'd searched everywhere for software or tips or hacks and tried everything else I could think of. I was about to give up when I remembered my Dell LCD has a 1:1 pixel mapping mode, so at last I can play the game without any distortion - maybe I should go a step further and dust off that 14" CRT ;)
Nemo: you can try launching the FreeSpace2.exe (the game is run by FS2.exe remember ? :) ),which is the original launcher, then click setup and if you're lucky maybe you'll be able to set other resolutions than 1024x768 :)
or far better, install fs2open, then you should be able to set any resolutions (in the fs2open launcher) including wide-screen ones:
http://www.gog.com/en/forum/Freespace_Series/gog_freespace_2_freespaceopen/9 in that case you can indeed do what UK_John says, use the fs2open automated installer to install fs1 mod into FS2, it's complete port of fs1, including original cutscenes