My desktop is currently connected to a router via ethernet. I have installed the software & drivers successfully for the afore mentioned Belkin wireless adaptor but it does not show up in the system tray or Connections. It is in Device Manager. When it is plugged in, the blue LED on the Belkin lights momentarily then goes out.
I have also installed it on another desktop (to check whether the Belkin is at fault or not) & it works fine so something is wrong on the PC it seems.