Set Priority in Windows 2000

I can go into Task Manager and set the priority of a process that is running. I would like to know if there is a way to default that priority every time the application starts.

Example: I have a background task that runs all the time. I notice a slight improvement if I set the priority to BelowNormal. My problem is that I have to set this every time the application starts. Is there a way to get it to automatically start with BelowNormal priority?