NIC with multiple interfaces for ForeFront GW server

Generally I'd choose an Intel Gbit NIC, they have up to four port NICs, I'd put two of these in the machine. But I can come up with a more qualified recommendation if you supply me with more info:

How much data are you expecting on each of the ports and what kind (office use, file transfers, backup).
What is the server hardware (model/make) and what expansion slots are available?

Well actually I was thinking of using 2 Intel® PRO/1000 GT Quad Port Server Adapters . Are you sure that both would be recognized by the OS? Could I use them for routing etc without a problem?

http://www.intel.com/support/network/sb/CS-030614.htm

Intel says the 2008 R2 server does not support that NIC natively, but they are shipped with the proper drivers.

I've cursorily skimmed the MicroSoft ForeFront site and as I understand it, it is a kind of security gateway, I imagine that most (if not all) of the routing it will be doing will take place in software (as it will do routing based on configuration parameters of the software) and as such you won't need to worry about any advanced features of the NIC, just high throughput and a server that can handle that kind of traffic (a lot of it will pass through the CPU).

I take it that the server you are using does not have PCI-express interfaces?

My experience is that while fairly well supported, PCI and PCI-x expansion cards are lagging behind in features and support.

And it seems I have misinterpreted the table I linked to, it seems that "In Box" means that the drivers are indeed included in the windows 2008 server OS.

It seems that compatibility wouldn't be a problem at the end.
The server has PCI and PCI-x slots. Do you have any other recommendations for NICs with more features/support/etc?

Thanks Xenix!
Actually I completely agree with you!  Intel® PRO/1000 GT Quad Port Server Adapter is a really good option.

Solved!