I need to launch an EXE that runs after the main installation. I've created a "Custom Action" to launch the EXE but the EXE I'm running will exist in a subdirectory on the installation CD. I set "Source Location" to "Browse File System", but nothing I've tried for the file name works (eg. [SOURCEDIR]\SubDir\Post.EXE). It looks like InstallSheild wants to compile this file in. That's OK by me, but I can't figure out how to set this all up. If I add the post installation EXE to the project, how to I make sure it ends up running out of the subdirectory? Is this even possible?