I'm the author of Thinstall, and I can swing you a free copy of Thinstall if you made a nice demo and associated tutorial showing how it could be used to package perl programs into a single EXE. I don't think many people know of the potentional to do this, or how to do it, but we haven't had time to make a nice demo and there aren't any perl experts yet - so such a demo would be great. The tutorial should be in HTML with step by step instructions, screen shots, graphics, etc... so that someone unfamaliar with Thinstall could quickly do the same thing. The resulting EXE should run from CDROM/download link without any installation and on restricted guest account for Windows XP.

If interested, contact me at jclark-at-thinstall.com. I'm out of town until Tues...

Jonathan

P.S. To answer your question about updates, file updates are always stored outside the EXE so the EXE can never be corrupted in this fashion.