I have a wireless laptop that I have hooked up ok, but my desktop does not work... How do i fix this problem? I have an airport express wireless router. thanks
If the desktop has no wireless adapter, buy a PCI or USB model for it.
If it has one, read the password from the laptop wireless section and write it down along with which wireless security protocol is being used (WEP or WPA).
Then open the desktop's networking settings, detect your Airport's signal, select security protocol and apply the password.
If that doesn't work, download the Airport's manual from Apple and read up how to access the router's setup pages.