Question : prevent user to save worksheet

I have xlsx file made in excel 2007, the file have VBA code which prevent users to save the worksheet if they don`t fill specific cells with value .
my problem is.that when the user open the xlsx and don`t enable the macro.
the macro will not run and he can then save the file with my condition set into the VBA .
how can i solve the problem?

Answer : prevent user to save worksheet

Few days I also was searching this .. here i found it and I am sure you will like it.

http://www.vbaexpress.com/kb/getarticle.php?kb_id=379