If you want to clean print spooler in windows xp easy option is using cleanspl.exe tool from Windows Server 2003 Resource Kit but are applicable to Windows Vista/XP. You can be downloaded here
Cleanspl.exe: Spooler Cleaner
Spooler Cleaner (CleanSpl) is a GUI tool that restores the print spooler to its original state. It deletes all print jobs, printers, printer drivers, and spool files on a specified local or remote server.