160gb hard drive need a patch?

Hey peeps… I just got a 160gb seagate hard drive, got it home plugged 'er in etc. The computer regonises it, even in windows it says it is working ok but when I go to my computer it isn’t there. Is there a patch or something I need or something I need to configure? I’m on XP Home with SP2 and all other updates…

Cheers, Johnny