[plug] newbie, adsl, and linux internet sharing queries

[Ari Finander]

It looks like we're going to be getting adsl (with two students needing to use 
the net at the same time and requiring good sppeds, there's not much other 
choice here in Perth aside from spending hours each week in wasted time while 
pages load).  I want to upgrade our LAN to Cat5 so that it will be easier to 
get both computers (and sometimes an old laptop with ethernet docking station  
running RH6.2) online at the same time.  I'm looking for feedback on my plan:

New Hardware Requirements-
1. 8 port 10mbs ethernet hub (will any brand do?)
2. Cat 5 cable to connect machines to the hub
3. A 486 to run a firewall for the network

I envision having the adsl modem hooked up to the hub, having internet data 
going through the 486 (also attached to the hub), and having the other two 
computers attached to the hub and being online at the same time.  Does this 
sound like a realistic impression of what it will take?  Does the adsl modem 
hook up to the 486, then the 486 goes to the hub, or does each computer AND 
the modem hook up to the hub?  Does anyone have any old cabling that they're 
getting rid of, or an old hub (after playing with linux on all thos eold 486s 
and selling them off, I now wish I'd kept just ONE *argh*).

TIA,

Ari