How to setup my home network.

Right, now, where to start...

Ok, here's what I have:

<b>My PC</b>
P4C 3Ghz
ASUS P4C800-E Deluxe Mobo
1Gb Corsair DDR500 XMS Pro
ASUS Radeon 9800XT
BT ADSL, 512/256. Alcatel Speedtouch Modem.

<b>Brothers PC</b>
P3 1Ghz
ASUS Mobo (I forget which one :S)
512Mb SDRam
64Mb GeForce 2 Ultra
Netgear Ethernet card

and then theres one NetGear 4port Hub.

Now, at the moment, my PC is connected to the Hub using my mobo's onboard LAN features, then theres the wire from the Hub all the way into my brothers room connecting to his Ethernet card.

Both systems use MS Windows XP SP1 and share the internet connection which runs from my PC. Unfortunately, this means that my PC has to be on all the time, or at least when my brother wishes to be online.
Both PC's share files with one another.
We have one printer, a HP Deskjet 895cxi, which is currently connected to my brothers PC and not shared.
Both PC's run Norton Internet Security 2004 with firewall and antivirus enabled.
The network used to run rather smoothly, but lately its had its hicups which I believe are solely associated with Norton's firewall.


Anyhow, here's what I want...
The ability for both PC's to be able to use the ADSL independantly. File sharing ability when both machines are running. Ability for both PC's to print to same printer.
In order to achieve this, I believe I require a Router. Having had good experiences with NetGear in the past, I've found Netgear DG834G (<A HREF="http://www.overclockers.co.uk/acatalog/netgear_wireless.html" target="_new">http://www.overclockers.co.uk/acatalog/netgear_wireless.html</A> - top one).
I've never used a Router before, and am far from a networking expert

What would be the best course of action, what hardware would you recommend, and how should it be setup?

Thanks,
Parm

~~There is no path to peace. Peace is the path.~~