If you just wanted to make a list of all the modules which are installed in your instance. Don't waste time, be smart write a command using drush.
- List all modules and themes : drush pm-list
- List only modules : drush pm-list --type=Module
- List all modules except core modules : drush pm-list --type=Module --no core
- List all enabled modules except those from the core : drush pm-list --type=Module --no core -- status=enabled
- List all enabled modules except those from the core which belong to the CCK package : drush pm-list --type=Module --no core --package=CCK status=enabled
If you want more info about the pm-list
- drush help pm-list