upgrade

this looks interesting,

Upgrade an existing motherboard
This scenario assumes that your existing motherboard works and that you
can start the existing Windows installation on the hard disk.

To replace a working motherboard with an updated motherboard and to then
reconfigure Windows to work with the new motherboard, follow these steps:
1. Start Windows, and then log on as an administrator.
2. Insert your Windows CD in the CD-ROM drive or the DVD-ROM drive, and
then let Autorun start.
3. Do one of the following:
• For Windows Server 2003:
a. Click Install Windows Server 2003.
b. In the Windows Setup window, click Upgrade (Recommended) in the
Installation Type list, and then click Next.
c. Follow the instructions on the screen until the computer begins to
restart.
• For Windows XP:
a. Click Install Windows XP.
b. In the Windows Setup window, click Upgrade (Recommended) in the
Installation Type list, and then click Next.
c. Follow the instructions on the screen until the computer begins to
restart.
• For Windows 2000:
a. Click Install Windows 2000.
b. In the Windows 2000 Setup window, click Upgrade to Windows 2000
(Recommended), and then click Next.
c. Follow the instructions on the screen until the computer begins to
restart.
4. Just as the computer begins to restart, turn off the computer.
5. Replace the existing motherboard with the new motherboard.
6. Turn on the computer, and then allow the upgrade to continue.

Setup installs the HAL, the IDE controller drivers, and any other
drivers that the new motherboard must have.
7. After the upgrade is completed, reinstall any service packs or
hotfixes that you had previously installed.