Oh Pouched One,

Don't try tapping the screw - this is a bad idea if you don't know what you're doing. guids has a pretty good idea - it should work decently.

I assume you mean you destroyed the head of the screw, where you put the screwdriver tip - if you actually stripped the screw itself, you probably damaged the hole it goes into, and are gonna need a bigger screw. So, here's to hoping.

Good Luck,
yasher