Okay. So. Over the weekend I picked up the nasty Antivirus Vista 2010 virus. My computer was kaput for a few days, then I fixed it up in short order with Malwarebyte's anti-malware program. I thought all was well, and resumed working on my realism mod.
I started up Fallout 3 to test something, and - FML - I HAVE NO CURSOR. I can't click through the opening credits or select any of the menu options. I had to Control-Alt-Delete out of the program. I tried restarting the computer, removing the disk, everything. I'm convinced that if anything will fix the issue, it's uninstalling and reinstalling the game entirely. I don't mind losing my saves; I haven't actually been doing any real gameplay since I started making my mod, just testing. But what I DO very much mind is losing my mod. Recreating it would be long and tedious (though not impossible; I've catalogued all the changes I've made).
How should I go about this?