802.11b signal strength

Hi,

Is there any way to get signal strength information from a orinoco
silver card using the devn-orinoco.so driver and the standard tcpip stack.

Has anybody ever tried to get this information. I am intrested in open
source as well as commercial products but would prefer open source since
I can hack it.

I did do an extensivce search on google but could not find any products
or applications.

Thanks,
Sri