|Go with jefro's response but i'll provide more details.|
Once you're on your Virtual Windows XP, go to "Actions" then "Install or Update Virtual Machine Additions". You should then be installing software onto your Virtual PC to help you out.
Another method is going to "Edit" then "Settings", click on "Share Folders" and pick any folder you'd like to share.
AMD Phenom II X2 550 @ 3.11
Patriot PC2-6400 4Gig
Seagate 160Gig SATA
Seagate 320Gig SATA