HOWTO: Use Regsvr32.exe with WIX

I was surfing the blogosphere tonight when I came across this interesting blog from a Microsoft employee developer using WiX demonstrating how to use an EXE custom action to call Regsvr32:

For those of you who don’t recognize this dll, its a required library by Add-in Express, we are using it to ease our development of GhotIt (http://www.ghotit.com) plug-in(s) for Microsoft Office applications.

Now I'm currently too tired to give another `don't believe what you read` article so I'll just leave at where are the setup police when we need them?