Hi Mekinnik
The best thing is always search for a help on a topic.
For Excel 2007 search for help on Trusted Publisher. You will find more
information for how to set up trusted publisher.
If you want to open your Excel files with high security, you should add the
loaction of your Excel files to the Trusted Locatations.
For Excel 2007:
Press Office Button --- select Excel options --- select Trust Center
select Trust Center Settings --- select Trusted Locations
select Add new location --- browse to where you saved your Excel files
check Subfolders of this location are also trusted, if you want,
add a description if you want.
Then press OK.
I hope this will help you.
Yara