Ubuntu – trouble in wireless connection

Hello everyone,

I have an issue with the wireless connectivity.

Pls help-

Have installed Ubuntu 10 on a system and that is a PC and Ubuntu 11 on an aged laptop.

Now the problem is that none of them detect any wireless connections.

Even a manual connection work deploying SSID and net key on WPA personal is not recognized.

FYI, both have the wireless required h/w,

Please tell me how do I fix it to use wireless.

PC for now got a direct ethernet connection which labours robotically, however I require shifting the PC at a different place.

Kindly assist.

Thanks much!