i am having 20mb virgin cable installed thiss weekend along i assume with the standard basic virgin modem. I am wondering if i can now buy an airport extreme to send the signal through the house.

I have 1 xbox which is currently hard wired into BT home hub modem (will this now go into the airport extreen thru gigabit conection)
2 x work laptops windows xp on wireless
1 x xbox (when son visits) on wireless
1 x desk top win xp wireless

and of course my beloved mac which is curently wired thru BT homehub modem wired.

Will the airport handle the 20mb and can i still run an x box thru the wireless conection of the airport extreme.