I think Bojovan is trying to configure the wireless computers in ad-hoc mode without a router.

If you are using the Belkin software or third party to configure the wireless connection, make sure you configure each computer in Ad-hoc mode and you give each computer the same SSID (network name). This should allow you to do simply file sharing between the machines.

If that doesn't help, try providing the ipconfig/all on both machines to we can further diagnose the problems.