Jason,
How are you doing you .Save ?
I suspect all computers have the double extension, but because they are set
to hide known extensions, you just don't see it.

NickHK

"Jason Zischke" wrote in message
...
Hi All,

I have a workbook that has a save function that saves out a certain sheet
and puts a custom extension on it other than "*.xls". However when I put
it
on this one computer it puts my extension on and then the ".xls" extension
on. How can I stop this?

Jason