If it ain't broke, fix it till it is. That's my motto
How did you bust your card trying to flash someone elses? (EDIT nm you posted while I was typing :p)
You can pick up PCI video cards pretty cheap in the event you get a card with a bad flash...I have never tried a blind flash before. Although have flashed cards when the screen was barbled, was still sorta able to see what was going on.