Windows Movie Maker came with my computer, now it doesn't work (error/close every time I open it.) This happened because I installed a program that was made before XP existed (and at the end it told me that it may cause an error but wouldn't let me cancel)
Anyway, I uninstalled that other program but I want Windows Movie Maker back, so what are the risks when I run the software repair wizard that will repair the programs that came with my computer?

(Does it try to repair ALL programs, or will it let me choose one?)
(I have all that stuff from when i first got the computer– stored in my D drive for recovery)
(Unexpected error, "has to close")

I'm not worried about viruses, I'm worried about further software errors
some people are saying I should download it… But I already have it! I don't understand downloading it…