Thanks Tom, but i didn't explain the problem very well. I
have a custom menu with an option that by default it will
open .xls files, but some .xls files may allready been
zipped, for instance. When the file open dialog box opens
all files are visible, and what i'd like to do is, if i
click on a zip file Winzip will open it and then i can
choose the .xls file inside the archive and open it with
Excel.
Is this possible ?