If, like me, you want to administrate your Windows 2003 servers from your Vista workstation, you may find that you recieve an “MMC could not create snap in” error when you open one of the admin tools, it also manifests as corrupted graphics within some MMC Add-ins. It appears that the dlls are not registered correctly, there’s a KB article from Microsoft that contains a script to reregister the dlls. It’s a simple fix: Copy and paste the following script into a text document, save it as RegisterAdminPack.