Improve Windows XP Shutdown Speed

Go to Start then select Run 
Type 'Regedit' and click ok 
Find 'HKEY_CURRENT_USER\Control Panel\Desktop\' 
Select 'WaitToKillAppTimeout' 
Right click and select 'Modify' 
Change the value to '1000' 
Click 'OK' 
Now select 'HungAppTimeout' 
Right click and select 'Modify' 
Change the value to '1000' 
Click 'OK' 
  
Now find 'HKEY_USERS\.DEFAULT\Control Panel\Desktop' 
Select 'WaitToKillAppTimeout' 
Right click and select 'Modify' 
Change the value to '1000' 
Click 'OK' 
Now find 'HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\' 
Select 'WaitToKillServiceTimeout' 
Right click and select 'Modify' 
Change the value to '1000' 
Click 'OK'