Sharing an Internet Conection with Windows Vista, to other computers in my network *using Windows XP Professional*, is proving to be a nightmare.

I have 2 network adapters, no router, and a Motorola SB5100 cable modem
Both are integrated into my Asus ASN-Sli Deluxe motherboard
Connection 1 is an Nvidia chipset adapter, Connection 2 is a Marvel Yukon 88E8001 adapter. Both have the latest drivers available.

On Connection 1, I have my cable modem plugged, on my Vista computer. I receive an IP address via my ISP DHCP server.
My Connection 2 adapter is connected via ethernet cable to a d-link hub (not router). 2 other computers using Windows XP Professional, connect to the network using this hub.

With Windows XP, I had to do NOTHING, but just select my Connection 1, share it via ICS and my second adapter (Connection 2)would automatically become my gateway (and use IP 192.168.0.1). All the other computers would connect to it and receive both internet and network acess.

With Windows Vista, I follow the same procedure. I share Connection 1, activating ICS, however, my second adapter (Connection 2), stays in Limited Connectivity, or Local, with an IP address of 169.254.xx.xx.  As expected, my other 2 computers cannot access internet as they used to, and I'm stuck with this, for over 3 months trying different approaches to this problem.

I also have Mcafee Viruscan 2008, but the Firewall is set up correctly (same parameters as my other 2 XP computers), so I know its not a firewall problem.

I come to you, in dispair, I hope you can help me.  I tried to give as much information as possible.

Best,