You still learned something. Take the rest of the day off.

Just in case this isn't obvious, you need to have VSD on any computers you want to use to edit VSD pages. The .vnu file is a VSD-only file, nothing else will open it.

On the jump drive, be sure you have all files associated with your site (not just the .vnu).
I keep a folder for all my original images and graphics as well as documents and other content. Everything is an exact copy of how the original site was set up, so VSD can find everything right where it expects it to be for upload. If you added files/images through the Add Files option, you may need to add them again (like favicons, for instance).

Cannot open or cannot find?