USB WiFi problem

I have just recieved a USB wi-fi wireless connector.

Having plugged it into my PC and installed the software, it is saying 'limited or no connectivity'.

http://i257.photobucket.com/albums/hh206/JamesAOK/Untitled-1.gif

If anyone can help it would be much appreciated!

 

1) check in the device manager that the network adapter is installed properly
2) if it is then check the wep ( or wpa ) code is correct
3) if not that 99 % you have a neighbors signal drifting in and causing interference
you will have a good signal and yet no transmission / internet
you may not even see it with the useless windows wireless utility and / or the beacon on many new routers is turned off by default
change the channel in the router from the default channel 6 to channel 1 or 11 ( can be any other than 6), change the ssid from the defaults ( even if only to add a digit), turn on encryption

http://portforward.com/

also make sure that the router is high and uncluttered