I never know you can use task for puch out this knid of Run command.
I have to create three task for Windows XP, Windows 7 (32bit) Windows 7 (64bit)
with following command
C:\Program Files\Microsoft Office\OFFICE11\Outlook.exe /cleanfreebusy (windows XP)
"C:\Program Files\Microsoft Office\Office14\outlook.exe" /cleanfreebusy (windows 7 32 bit)
"C:\Program Files (x86)\Microsoft Office\Office14\outlook.exe" /cleanfreebusy (windows 7 64 bit)
IT works, thank you so much
Lillian