hmm might be useful at a later point. I d/l this program called "Disk and Registry Alert" and it looks GREAT, but slight limitation on registry watcher unless you buy. I'm thinking about it, but I was hoping there would be an open source one available. This thing is so shotty looking I would think it was open source.
The key you are looking for is the snapshot maker thingy. It should create a file that has a list of all the changes the app made ( file, registry, dlls. Everything ).