Is she on XP?
Make sure the wireless card is enabled.
Type in services.msc
Scoll down to wireless zero and make sure the service is running.
The numbers and letters in your posting is the mac address,thats what the IT guy needs from your girlfriend.He has set the router up like that for extra security.
Tell your girlfriend to ask the IT guy what the name of the network is incase he has the SSID disabled ( network name)