Getting custom Drawing Sheet to be default.

I've created 2 drawing sheets to use as templates. My problem is that when I try to add a Sheet(Tab) to a drawing it defaults to the standard drawing sheets that come with SolidWorks. I have tried to set it to my .drwdot file but I am prompted to use a .slddrt file from a standard location. How do I set it so the sheets I created are the default templates?

Thanks,

Jay

SolidworksDrawings And Detailing