Zee - I use a Linksys WAG54G wireless router.
I don't know whether it has been replaced by Linksys but I've only had mine a year so it's still reasonably current. It will run all of your computers at home, wirelessly or through the 4 ethernet ports at the back.
The set up is dead easy and if you do get into trouble then the 24hour helpline is spot on.
Aido is going to set mine up for me so i can print wirelessly to the laser printer in the office upstairs if i am downstairs - just saves all the cabling etc !
I bought the router and a couple of other bits from http://www.itchest.co.uk/ Very helpful chap with all the right knowledge. A call to them may benefit you.
The linksys direct link to the WAG54G is Here