How to share?

I have two computers one is for gaming one is storing files they are on a home network, is there a program i can use where i see the other computer's harddrive and i can pull anything off of it and sharing program?

How to Share and Set Permissions for Folders and Files Using Windows XP
http://www.microsoft.com/technet/prodtechnol/winxppro/maintain/filesharing.mspx

Assuming you're running XP, open the Help and Support Center and type "File Sharing" in the Search field. That will bring up 30 articles on file sharing in the online Help and Support Center, and another 15 in the MSKB.