[snowmonkey]

Sounds like you guys know exactly what you want which makes the whole process a hole lot easier.
Since Wireless connection is the secondary option the best move would be a 8 port router (8 port router don't come cheap), you could go bit cheaper in you would buy a 4 port but that mean all your port will be filled right away (1 WAN and 3 LAN). Personally I have two computer and a lap top at home so i bought a 2 port router (1 WAN , 1 LAN) and connect the LAN port to a cheap 8 port 10/100 switch, it works great. Generally, a good router is a firewall by design (doing DHCP,NAT,Port forwarding, MAC filtering) so I would suggest to go the way I did.


cheers