Problems with Windows 2000 Boot disks, HELP!!

I took one of my computers' hard drive to Best Buy to get it cleaned. I got it today, made some Windows 2000 boot disks, and tried to load them onto the computer. However, after I finish loading the first boot disk and start the second, it gives me the error message "SETUPREG.HIV Could not be loaded. Press any key to exit". Can someone PLEASE tell me what's going on??  

http://www.windowsreinstall.com/install/win2k/installw2k/page1.htm

Thanks for the link, Merlin, however, when boot up with the CD in the drive, nothing happens... All I get is the message 'Operating system not found'.  

Set your first boot device to CD-ROM using the BIOS.

Computer BIOS information and help

I can't access my BIOS.

Click the corresponding article I posted for more information on how to access your BIOS.