Static IP addresses

Clarifications

If you are simply trying to connect 3 computers to a single port (presumably a wall jack?), you should be able to turn off DHCP, use 3 of the ports on the router to plug in the computers and the fourth port crosslink into the wall jack or single port. If all PC's on the network are static IP's you may not even have to turn off DHCP. I am of course making alot of assumptions (like the port your plugging into isn't a switch with port security enabled) but that should work if I understand the question.

Is this supposed to be a wireless router for your home network, or is this just another hardwired router for an existing network. If it is an existing network, like at your job or anything, adding another router is not wise, unless you are trying to separate the three computers from the rest of the network.

At one point, there were some computers here that were connected using static IP, but since the upgrade to T1, DHCP has been turned on for all computers. The thing with fixed IP is that if something happens to the connection, resetting everything is very time consuming, esp if the computers are spread out over a large area.

The short answer to your question is yes. If it is a corporate network there are a number of reasons you might not want to do this (security, not all services/protocols will work through your setup, etc.).

First a question: Do you have IP addresses for all the PCs, but only one jack to plug into? If yes, just get an inexpensive switch (or, do as jimmy-jam explains to use the router for this).

Otherwise, if you need to share one IP, here's how:

At a minimum you will need the following information:
- the static IP address
- subnet mask
- gateway address
- DNS server address

In the Linksys router config Setup tab, for WAN Connection Type specify Static IP and then enter the information you collected above. Click apply...

If you don't know how to enter the router's setup, you'd best be served by downloading the manual for your specific model from the Linksys web site and reading the section on "Web-based Utility" or "Router Administration."