Then take it back to the place you bought it and tell THEM to fix it for you...then cuss their asses out for selling you a system without an OS CD.

Jeez...you didn't even get a "system restore" CD??? Based on your computer buying habits, I think I have a bridge or some oceanfront property I'd like to sell you....I'll make you a KILLER deal on it, I promise.

About all you can do now is use the computer you're on now and go download an illegal copy of winXP pro and burn it to CD to install on the other box...PROVIDED your hardware isn't screwed.

Are you SURE you can't hit the f8 key and boot into safe mode?