Well I use a wireless set up and Virgin via a set top box. You will need a wireless card installed in your PC and a router that you connect to the set top box.
You need to be within about 50 metres of the router to get a signal. The closer you are the better the signal.
I use a linksys router and it allows a one touch button on it that connects, installs and secures your network - the helpline if you need it is charged at 'normal' rates and is in operation 24 hrs a day - spoke to a lovely Phillipino lady who helped me out one day.
The whole wireless experience is great now.
Do it.. you wont look back.