I do not have Quattro Pro to test, but I would not be so sure the student is
not hacking your password. It does not take a brain surgeon to Google for
password cracking code.



--

Damon Longworth

2007 East Coast Excel / Access User Conference
April 18-20, 2007 - Providing Microsoft Excel training and Microsoft Excel
Classes
Atlantic City, New Jersey
www.ExcelUserConference.com/ECEUC.html

"SAM SEBAIHI" wrote in message
...
I have a protected Excel workbook that I send to my students, when a student
opens it with a quatro pro and then saves it, the password would be set to a
blank password this means when I receive it back from the student, I can
unprotect the sheet by just pressing tool/protection/unprotect without
entering my original or any password.

Note: I am sure that the student is not breaking the password becasue he is
failing the exam :-)

Any idea how to overcome this problem??
Thank you in advance