Well I am pretty certain I plugged the card in when I upgraded my pc and installed the new mobo. Just haven't installed the software or plugged in the aerial and hence no little logo in my taskbar at all telling me wifi is running.
Thinking more about it I suppose that I could install the wifi software disconnect my ADSL (even unplug the phone line to be sure) and if I can access the internet via wireless then I guess that proves that it is the neighbours system enabling me access?
Sneaky!!