Taskkill

Hi,

How do I supress or hide an error generated by WindowsXP’s taskkill command?

I am using taskkill in a script which is used for backing up user’s PST file. Before starting backup, taskkill terminates Outlook if it is running. But if Outlook is not running then taskkill shows up following error.

ERROR: The process “outlook.exe” not found.

Is there a way to avoid this message from displaying?