I just spent quite a bit of time getting Windows 2003 installed in dual boot config with Vista on my new NP9280. In order to help others in the same boat I developed a set of step-by-step instructions. I put them in a zip file along with the neccesary BIOS update from Sager and all the proper drivers (that I could find). To download the zip file go to http://www.filefactory.com/file/ah45...03_Install_zip. It is about 170MB but has everything you should need.

You are welcome to copy the zip to other locations for people to download, and copy this forum post. In my searching I noticed a lot of other people asking the same question I was so the quicker this spreads the less pain others will have to go through.