Hi Andrew,
There are two ways in which you can launch an installed EXE file.
1. Use a "New Installed Custom Action" type of custom action. You could place it under the "Commit" branch.
For more details please visit:
http://www.advancedinstaller.com/user-g ... led-action
2. Go to the "Dialogs" page and select the "Installation Complete" branch from the tree. Select the "Launch Application at the end of installation" box. In the newly appeared window select the EXE file you want to be launched after installation.
Regards,
Ciprian