Changing Task Priorities Permanently

I'd like 3 applications in my start-up menu to run at low priority when they start. They're all parts of Gator software which remembers passwords and fills in online forms. I like it, but it uses a lot of resources on booting up.

 

I read that one can create batch files to do this with the following syntax:

 

START /LOW program.exe

 

where program.exe is the name of the application. However, I can't get this to work in XP.

 

Any suggestions on loading and running files at low priority?