Hello,

I am using VISTA. I have made an xls.file with macro for a colleague.

Before sending it to him via email, I tried to add a digital certificate but
only managed to add a digital signature and the file immediately became as
read only and I could no save anymore, all stopped working.
This is not was happening when I was using XP, it was much easier to create
my own digital certificate and signature.

I need to solve this otherwise macros won't work and all effort to make them
will be lost :) Can you please help ?

Many thanks ! Arno