Is it possible to register environment variables in Setup Wizard project?

Question

I am creating a Visual Studio 2008 Setup Wizard for my program
http://support.microsoft.com/kb/307353
I see that it is possible to add registry entries, etc.. Is the

Answer 1

Windows Installer does support environment variables through Environment table, but Visual Studio setup projects do not allow you to use it.

A solution is to use a different setup authoring tool which supports environment variables: http://en.wikipedia.org/wiki/List_of_installation_software

Another solution is to manually add it in Environment table by editing the MSI with Orca.

There's also the custom action approach you mentioned.