How do you uninstall Win2000 ?

Insert Win 98 boot disk in A:druve and boot computer,at the command prompt,type in SYS C:
To manually remove the boot files,which you may have to use ATTRIB programme to access the hidden files on the C:\ partition ATTRIB -H -R -S C:\*.*
You can then use the DELTREE to delete the WINNT directory

Why not just fix Win2000? Insert the cd, boot off of it, choose Repair, and it will bring up the Recovery Console. You can then copy NTLDR from the cd to the root of your boot partition (usually C: drive).
If you just want to get rid of it, then delete the WINNT folder, and modify BOOT.INI to remove any mention of booting to 2000. You could also get rid of Documents & Settings folder.