Charlie wanted suggestions for a router with firewall. I found a few models:
Netgear WGT624 108 Mbps Wireless Firewall Router
TRENDNet 54Mbps Wireless Firewall Router, 802.11g, b
Netgear ProSafe FVG318 Wireless Router/Firewall/VPN
and Linksys Etherfast Cable/DSL Firewall Router BEFSX41, 4-port, VPN, DMZ, SPI