I've been looking to run Fallout / Fallout 2 in windowed mode; I have the steam version. Has anyone had any experience getting this to work? I'm running Windows 7 64bit.
There is no way to do it with stock Fallout 2, but there are mods available to do it.
For example, this one: Timeslip Fallout 2 engine tweaks for Windows 2000/XP/Vista
You should get Killap's mod: http://www.killap.net/
It takes care of this. If you read the readme it tells you how can you do this.