Cable modem to buy with router?

[PacMan]

Hi,
Ok, I have had it with 56k and this so called crap v92 with modem on hold. I have decided to go back to cable modem but this time, I’m buying the modem. My cable provider is Comcast. I have been looking at some cable modems and a router for my 4 computers at the home network.

Right now, I have all 4 computers (all WIN XP) on a 4port NetGear Hub and they all connect to the internet through my computer through dialup. I once had cable modem with 3 other computers on the network and the ISP started charging me additional $5 per extra IP.
I am now looking to buy a cable modem and a router to share the internet without the extra charge.

I have never installed a router on a network and need some advise from you guys.
Ok, my budget is low, so I was looking at this cable modem (yeah, I’ll check with Comcast if this is compatible) and I found this: 3Com Cable Modem.

This modem says I can share up to 15 computers on a LAN. So does this have some kind of a built-in router? And if I do go this route, will I no longer need my HUB and the cable modem acts like a hub/modem/router (NO WAY!!)? Here is how I see the path: ISP line (coaxial cable)>>>cable modem>>>CAT5 from modem to HUB and then the HUB to the computers? Or do I just hook up all my 4 computers onto this cable modem and still have the network features of a HUB?

router
If I do need a router, I was looking at this router: Compaq.
In case I do need a router. Is this correct?:: Internet connection>>Cable Modem>>>Router>>>HUB?? The router to hub part is the part I don’t understand if that is the right path.


What are your thoughts on these two products? I know they are not the best, but as long as I can free up the phone line.. I’m ok with them .
Thank you for your time and patience.