wireless network...no wireless network...wireless net.....?

Baloon tips says that there are wireless networks within range of my computer (My schools has a wireless WPA open, and a WPA2Secured).

All of my preferred wireless networks have been deleted somehow. naturally it doesn't connect, but when I go to View Wireless Networks, it shows no wireless networks in range....

I have also tried to add a preferred wireless network manually but as soon as I hit "OK" the cycle is repeated,

it deletes my new preferred wireless network, says that there is a network nearby, but doesn't show it

Reinstalled Broadcom and nVidia drivers, and updated Broadcom driver, yes the wireless switch is on

Compaq v3000, Broadcom 802.11b/g WLAN, NVIDIA Network Controller

Any Help Appreciated