Multihomed standalone Win2K

I need to place a Win2K server on 2 different, physical, public accessible networks. Like so:

208.37.49.xxx
198.80.55.xxx

This is a web server and will be routed to by 2 different DNS boxes. All it has to do is respond to incoming http requests on each NIC and respond accordingly.

Why? We are transitioning several web sites to new IP’s and want no down time.

I need to know:

1. Is this even possible?
2. How can we make this work?
3. Step-by-step