» Thu May 03, 2012 2:31 pm
Do not touch that file, unless you are absolutely sure what you are doing! That is the copy of your .ini Oblivion uses to generate a new .ini in case of proiblems. I do made two changes to mine (enabling screenshots, disabling dialog zoom) that I know I will always want, so that when I need to generate a new .ini file I won't have to make those changes again. But generally you do not want to touch that file.
You do have a My Games folder somewhere. Oblivion won't load a save without it. Search your C: drive and, if you don't find it on your C: drive, search your other drives. Before I switched to Window 7 my My Games folder was located on one of my secondary drives. Windows 7 placed it on my C: drive. So it might be almost anywhere on your computer.
The .ini file is not going to help much with windowed mode anyway. I don't have Oblivion installed at the moment so I can't check, but offhand I don't recall any lines controlling the size or position of windowed mode. At any rate, Oblivion does not like windowed mode. Those of us who have tried to run Oblivion regularly in windowed mode have usually run into problems eventually.