Hide taskeng.exe Window

Hi all,

We use GPP Schedule Task to run some logon tasks on both XP and Win 7 clients.

It gets the job done.  However, there is always this blank Taskeng.exe Window pops up during logon, and depending on the actual logon condition, sometimes the blank window keeps hanging around for minutes until the task finishes.

I understand it is merely a visual distraction more than a problem but when it starts to bother the big fish, it is us the little workers who have to come up with a "solution", or face some kind of "consequences".

Is there any way to hide this Taskeng.exe window when the schedule task is running?  It doesn't hang around as long in XP but in Win 7 there is a more obvious delay.  I guess it is because of the more "rich" settings available in the Task Scheduler.