Im with BT and replaced my Voyager 220 ages ago with a Home Hub. In my opinion you are better of with the Hub especially if you want to go wireless. Im running two computers via wireless and two via cable with no problems. The Hub Has a built in firewall and is more secure than the 220. Rather than renew your contract with BT to get the Home Hub do like I did and purchase it from elsewhere. (I bought mine brand new of EBay for £10) Hope that helps.
-------------------- As I lay in bed gazing at the night sky, dumbstruck by the awesome beauty of the heavens. I couldn't help but ask myself.....Where the hell has my tent gone ??