Daylight Saving

as a matter of fact iranian people need to change their daylight saving configuration in each year (thanks to president)

to change timezone in windows xp I found this page

http://support.microsoft.com/kb/931836

by this program

http://download.microsoft.com/download/5/8/a/58a208b7-7dc7-4bc7-8357-28e29cdac52f/tzedit.exe

you can change your timezone so easy.

don't forget to reselect your time zone after updating (it's needed to recache configuration)