I had been working on a portable version of DVDStyler. Someone mentioned it, so here's a test version of it. It lets you create DVD Menus. I'm not sure if the app is fully ready for prime time on Windows... at least as far as burning is concerned. I couldn't get it to work. But I'm posting a test for folks to try out anyway.
Download DVDStyler 1.5.1 Pre-Release 1
(may take a few minutes to appear on all servers)
Please post any feedback.