Agree 120% with NetSyn. Don't delete things until you know the consequences. I compiled a 2.4 linux kernel on my Slackware 8 system the other day, deleted the 2.2 befroe I tried the 2.4, so confident I was that it'd work... It ****ed up, of course, and I had to reinstall the whole system (well, I could've recompiled a 2.2, but it'd have been more trouble than it was worth!)

Moral of the story:
Don't delete unless you're absolutely sure.