Sara, be careful with that link Mick posted as some of the wireless routers are not suitable for your broadband connection. You need to make sure you do not buy one that is for ADSL.
Here are some that should be ok for you
Tenda Wireless-G CableDSL Router - Ebuyer
Belkin G Wireless Router - Ebuyer
NETGEAR WGR614 Wireless-G Cable/DSL Router - Ebuyer
Linksys by Cisco WRT54GL Wireless-G Linux Router - Ebuyer