Best and easiest firewall for Windows 2003 server

Maybe I should mention that I have this w2003 server set up with Routing and Remote Access. I have noticed in Windows XP that you can configure the windows firewall to only allow scertain ip's access to some ports but I can not understand how to do this in w2003 server when it is configured with routing and remote access. It says that it has the basic firewall enabled on my WAN interface and that I can set inbound or outbound filters. What I would like to do is block all packets to like port 8000 unless the packets are coming from example ip 83.83.83.83. Can I do this while not blocking anything else? It seems that I can not chose to set what packets to drop or receive, it is either one it seems.In the filter setting I can chose either "Receive all packets except those that meet the criteria below" or " Drop all packets except those that meet the criteria below". What I think I should do is Drop all packets to port 8000 except those that comes from ip 83.83.83.83, can I do that with this basic firewall?

Do you think two of these would work: http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/ps2031/index.html

Absolutely. The 501 is a great unit even though it is the entry unit. Many people now are also looking at the ASA55xx range from Cisco also as it is a vpn concentrator/firewall & god knows what else all in one. I use the 501 personally at home and it is brilliant.

I would suggest it would certainly meet your requirements. The other benefit of course is that there is ample support for Cisco eqyuipment on Experts-Exchange as well as many other places including Cisco's own web site.

Do you know anything about WATCHGUARD FIREBOX X15W as well?

No, sorry.

Cisco PIX, ISA, Checkpoint, Sidewinder and a little about Sonicwall's.

Thank you :)