Hi Michael,
As you can read in my above reply, I don't have an .msi file, but I can explain to you what are the steps needed to properly install the program. But you will have to create the msi file yourself, because I don't know, right now, almost nothing about the msi format or editors.
If you are used to msi files creation, it will be a easy task. Just drop me a line, if you are interested.
And what is that you can't mail me?!! I have the email addresses, here in the forum, protected, but my email address is all over the place. The PDF-ShellTools manager about box, the user's guide, rttsoftware site pages, and even the email address used to send the license email will reach me.