Setting up wireless + network

Hello, me again!

I'm going around a mates house next weekend to set up his new computers/network. I will have no internet access while there (until the end) so I was wondering if you could point out any possible problems with the setup and how to get around them.

Thanks,
comp

Setup
Equipment
1x Dell Dimension 4600 - Win XP Home - Standard NIC
1x Tulip TOPLINE 502 - Win XP Pro - Inbuilt Wireless 802.11b
1x Standard PC - Win XP Home - Wireless PCI Card 802.11b
1x Sitecom home broadband station (HBS) - here
NTL Broadband 600k - Ethernet socket
Misc cables. Parrallel printer (Epson). Scanner, webcam, etc.

Setup
Dell is connected directly to HBS, which is connected to Tulip and other PC via. Wireless. Broadband and printer connect to HBS.

Looking to have 4 users set up on all machines and have all the work on the Dell, sort of as a file server.

Are you planning on installing a hardware firewall or router?

well, the home broadband station acts as the hub/router/wireless point/print server so anything on that and then Norton Personal Firewall on the PCs.

If the personal pc run their own firewalls you could incur network issues. Other computers may not be able to other computers due to the firewalls on each computer.

can't i just allow connections from the subnet or whatever?

Since the hombroad will act as your firewall/router, correct, then you do not need to run a firewall on each personal PC. If you do then you will have to create firewall rules for each PC to allow incoming traffic from the LAN.