SQL Excel

hi, i hoped i won't get flamed by posting here.

i have a question to asked for, you might find it easy but i am a novice in programming.

lets say i have a testpaper in excel which i created for training purposes using Excel 03 VBA.

and as we know that excel 03 vba is very easy to break the "protected-password" in it.is there anyway to have a more secure way so that the questions and the answer in the excel file do not enable the training students to "cheat" using brute force attack ?

Hi !

No flaming here !)

Nope all is fine. Not too familiar with this area but one thing you could look into is to scramble vba code.
I took a quick look on the inet and found this http://invisiblebasic.sourceforge.net/
I think it might be what you are looking for. It can scramble (obfuscate is what the correct term is it seems) the code in an excel sheet so it is not easy to read.
Hope that helps out.
Take it easy and have a nice night, Al