here's what the readme file for SP2 says:
3.0 Uninstalling Service Pack 2
This service pack contains an uninstall mechanism that you can use to restore your computer to its previous state. When you run W2ksp2.exe to install Service Pack 2, a subfolder named $NTServicepackUninstall$ is automatically created in your systemroot folder. To turn off this W2ksp2.exe option, see Installing Service Pack 2.
Important
If you install any programs or services that require Service Pack 2 or that have fixes contained in Service Pack 2, uninstalling Service Pack 2 could adversely affect those programs.
If you turn off the automatic backup option for W2ksp2.exe, you cannot use the uninstall Service Pack 2 mechanism and, therefore, cannot uninstall the service pack.
3.1 Using Add/Remove Programs to Uninstall Service Pack 2
You can uninstall Service Pack 2 by using Add/Remove Programs in Control Panel.
To uninstall Service Pack 2 by using Add/Remove Programs
Click Start, point to Settings, and then click Control Panel.
Double-click Add/Remove Programs, click Windows 2000 Service Pack 2, and then click Change/Remove.
Follow the instructions that appear.
am I the only person who reads readme files?