For a year now i have had no troubles accessing the network in my home using my desktop pc. my rooommate on the other hand has not been able to access the network wirelessly with her macbook. i disconnected her direct line and turned her airport on and entered the key to access the network, it worked. now my pc desktop is unable to access the network with the security WPA enabled. i have downloaded and installed the latest firmware 1.09, reset the router, but still only macbooks can access. Whats the deal?

Computers & Internet - D-Link - DIR-625 (790069292637) Wireless Router