you will need to go to the individual computers and go to the My Computer area, then right click on the C: drive, or whichever drive you want to share, then click "Sharing and Security" then click the little disclaimer, it may ask you if you want to use the wizard to enable file sharing, or just enable it, or it may ask you nothing at all, but set up and then click the little box that says "share this on the network" or something along those lines, im going off memory cause im too lazy to look