If you do not want to use an emergency recovery disk try using w2k and xp’s recovery console for w2k and xp. Check out http://www.microsoft.com/technet for advise onhow to use the recovery console.
A bit more information would help.
On the Tools menu, click Create an Emergency Repair Disk.
Follow the instructions that appear on your screen.
You will need a blank 1.44 MB floppy disk to create an Emergency Repair Disk (ERD)
The repair process relies on information that is saved in the systemroot\repair folder. You must not change or delete this folder.
To start Backup, click Start, point to Programs, point to Accessories, point to System Tools, and then click Backup.
Choosing Also back up the registry to the repair directory will save your current registry files in a folder within your systemroot/repair folder. This is useful if you need to recover your system in the event your hard disk has failed.
Additional information on the repair process is available. If you are using Windows 2000 Professional, see the Windows 2000 Professional Getting Started online book or the Windows 2000 Professional Getting Started book that came with your Windows 2000 CD. If you are using Windows 2000 Server, see the Disaster Recovery How to section.
Use emergency repair on a system that will not start