I'm not sure if that's possible with 2000. I've only ever done it using a floppy disk. It might be possible to use a CD. It's a long time since I've used 2000.
Before i continue to the setup tomorrow...are you sure that Windows 2000 server can be install/setup in Gigabyte motherboard GA-X58A-UD3R after following the information below?
Download drivers from Gigabyte web site. Put CD in drive. Boot from CD. Follow on-screen instructions. (You will probably need to press F6 as the installation starts so that you can install the disk driver.