You shouldn't need to worry about anything, but it's always best to be safe. Before installing:
1) Backup the database (option within program)
Using Explorer, navigate to /my documents/DVD Profiler/ (or whatever it is)
2) Save any custom layout to a backup location (may want to just backup whole 'Layouts' directory) 3) Save any custom reports to a backup location (may want to just backup whole 'Reports' directory)
Depends how pessimistic you feel about something going wrong and how much work it is to recreate your custom layouts / reports.
Stuart |