How to install Microsoft XPS printer

http://www.microsoft.com/downloads/details.aspx?FamilyID=4d951911-3e7e-4ae6-b059-a2e79ed87041&DisplayLang=en

High CPU untilisation of spoolsv.exe

Check if there are documents pending in the printers spool. Recreate all printers.
It helped me. http://www.adminnotes.com/index/2006/01/spoolsvexe_caus.html

This effect was on several PCs after February MS patch.

Vista and computer only wireless 802.1X authentication

AuthMode in XP was a registry setting, in Vista is is slightly more complex: http://support.microsoft.com/kb/929847