Hub internet connection...

I don't know exactly how familiar with networking you are so I am going to run through the basics so forgive me if I am stepping on any toes. First we need to make sure the physical connection of the network is intact. The gentleman above asked a very valid question. On most switches these day's they are autosensing and this doesn't matter but the port that says uplink if any of them do needs to be hooked up to the modem. If your modem that is supplied with your cable service is not also a Router this configuration will not work. The way personal broadband works is the ISP or Internet service provider provides you with (1) public IP address that is allowed for you to use. If you are wanting more than one computer on this (1) IP address than you have to do what is called NAT network address translation or more specific PAT port address translation. What this does is take your different computers that are on your network and assign them different ports to which they can communicate to the outside world. So in saying all this if it is not also a router this feat is imposible. If it is a router than you need to set it to DHCP and turn on your DHCP in you network connections control panel. I can give more detailed instructions with your follow up post on this answer. If it is not a router than my suggestion is take it back to the store if you can and buy a very low cost router and use it.

Make sure the port next to the uplink port is not occupied incase if it's routed through it. A hub is a device used only to distribute a signal and is very inefficient in a network environment. I'd stick to anything called "a switch" since it has a little more intelligence in determining where and who to route the packets to.

You definitely need a router too since the cable modem will only issue one IP address in most environemtns (unless if you have a package from your isp with multiple IP's) then we're talking about a completely different solutions which will probably involve a special router (mainly cisco) provided by your ISP.

How is it that you have them connected to the hub? What connection are you using for the uplink? You should connect the uplink to your router or internet modem to be able to share the connection across the board. After you have the uplink connected with the router/modem connect every other PC to the hub and you should be able to get a connection among them all. Let me know if this works out for you.

Chris