Replacing Xp with Win2k – Toshiba Laptop

I have a new Toshiba 1115-S103 laptop that came pre-loaded with Win Xp. The machine is a 1.5 Ghz Celeron with 256 Meg RAM. I have purchased a copy of Win 2K Pro and want to wipe the hard drive and load Win2K. I am trying to find out if I will experience issues with the Toshiba bios and/or drivers if I make the switch. I am not concerned with losing the other Toshiba clutter such as operating manuals etc on the Toshiba pre-load but I am concerned about getting the integrated modem and lan hardware working properly. Toshiba technical support has been of little help with this as they seem inscensed that I don’t want their pre load stuff. I am looking for tips from someone who has made this operating system change on a laptop and preferrablya Toshiba.