Looks great! Need any help with the wireless?
Hmm, is the stick compatible with Windows 7? Maybe it's a loose connection from being interted/removed often, and might need a little pressure on either side?
are you plugging into the front usb slots or the back, if I remember correctly the front ones get worse power supply (dont know where this came from) and the back ones are more reliable...
Alternatively it could just be a window'ism whereby it will only work in one of the USB slots and you need to find which one, I had this on my old PC with my usb keyboard and mouse, I unplugged to clean my pc and neither would work again after (even following 2 reboots) until I juggled them around the slots until they were in their 'original' slots and everything worked fine.