If you want to install multiple instances of the same setup - think of it as, for example, installing a master instance of SQL server, and the other named instances after it - you need to use Instance Transforms. Instance Transforms are only supported with Windows Installer 3.0 or higher, therefore won't work with Win9X operating systems, and require you to create instance transform files, and also need you to follow certain strict package authoring guidelines.
Sounds like rocket science, doesn't it? Well the good news is an upcoming Install
Aware update supports instance transforms on ALL Windows Installer versions, on ALL operating systems, and with a single script command called
Transform Instance. Once again affirming our slogan, Windows Installer without Rocket Science
Please contact me privately for details of this update and availability as I cannot discuss it publicly as yet.
If, you meant something else, please let me know.