I decided to take the most painless way out and just uninstall the game (to later reinstall). But I got an error. I tried several different things, and then tried to uninstall from control panel but nothing worked. So I went to the location I installed Oblivion and simply deleted everything there, then deleted everything related. Obviously this wasn't the best idea. Whenever I insert the Oblivion CD and run the game, instead of having the install option it simply acts as if it were still installed. When I press play the screen goes black, then it crashes (for the obvious reason). And I still get the same error while trying to uninstall.
So my problem is, I couldn't uninstall the game. And now I can't install it either. Any help would be appreciated.
I also realize I double posted this (now in the incorrect section) but the technical support section is very inactive (2 hours with 0 views) so it was looking kind of hopeless. Hopefully the mod will be understanding or wait a little bit before deleting this.