I had a Belkin pre-n and had a lot of problems with it dropping connection and not being able to get a signal to my laptop even when it was in the room next door - I took it back to pcworld and chatted with a bloke in the router section who said he'd read a lot about that problem on a forum. I then replaced it with a linksys. see
www.broadbandstuff.co.uk - you're talking in the region of £40 to £50 for a decent wireless router.