Two desktops named Desktop 1(attached to Belkin pre-n wireless router) and Desktop 2(wirless pre-n card), one laptop named Laptop( wireless pre-n card), winxp Home. Desktop 1 and Desktop 2 can access each other's files. Laptop and Desktop 1 can access each other's files. Laptop and Desktop 2 cannot access each other's files. Can anyone solve this problem?