How can I read file from pocket PC(*.pxl) in Microsoft Excel?

[Leo]

There is a problem with my pocket PC, I can't create a connection between my
pocket pc and pc through USB. I find a way to work by using card reader and
my memory flash card. The problem with that way is that Pc Excel doesn't read
the files from the memory flash card (it doesn't recognize the *.pxl format
as Microsoft Excel file type).
Is there anything i can do about it?

Thanks