how to config my d link usb wireless adapter
What is it doing? Try connecting to a (g) or (b) 2.4GHz network with no encryption first. In other words, use channels 1 through 11; not all adapters support the higher channel numbers. If you think you're connected, open a command prompt and do ipconfig to see if you're picking up an IP address. If you are, you an probably ping the access point.