You don't need to bother phoning sky until you can get the network screen to show local and service connection as ok. Is it giving the network selection and then asking for the network key? Key is case sensitive don't forget and to get lower case you need to press the number key 4-8 times depending on the letter required.
Disregard cables and such you said it was wireless
As above tho, case sensitive key, bet the sky box has put it all in caps.
The official sky adapters are apparantly a right PITA but I read you can connect to your PC and put the wireless details int here and then reconnect to the Sky box.