You want to make sure that any router you buy supports both 802.11b and 802.11g standards. Some of the cheaper routers only support 802.11b. 802.11b is an old wireless standard. It is slow. 802.11g is the new standard. It is five times faster than 802.11b. All 802.11g routers also support 802.11b
Here's a selection of 802.11g wireless routers.
Linksys WRT54G
Netgear GR614
DLink D1624
