Ive got a laptop. Go into PC world and they'll help you out.
DO NOT gop to Comet, they do not except refunds if anything goes wrong!
Also, you can get a connection that will allow you to connect your current internet to the laptop. So you can connect your internet from your computer to the laptop. My lead only cost me about £40-£50, which is great considering its about £20 a month for broadband and you could have ended up having to broadband boxes. You can get the connection lead from PC World too