We have created a setup for 4 of our applications. Each of 4 apps all use the same DLLs, OCXs, etc...the only difference is help files and exes. Product1.exe, Product2.exe, Product3.exe, Product4.exe.

After installing the 1st app, upon launching setup again, the Modify/Repair/Remove dialog will appear...we have added an 'Install different application' radiobutton to this dialog...so that one of the other 3 apps can be installed (different Reg, different directory for some, but all the shared DLLs/OCXs, etc... all live within the same directory).

When I run the setup a 2nd time, the 2nd app won't install...because Windows Installer thinks that it exists already. How do I tell Windows Installer otherwise?