Shooting a synth does allow you to take a tour of a house, which is great, however it can be challenging to shoot a great synth and a little challenging to navigate as well, for the time being.
You may find that shooting panoramas to stitch with Microsoft ICE http://bit.ly/microsoftice to then be uploaded to your Photosynth account is simpler for you. The downside is that there is not a way to connect multiple panoramas in the current version of Photosynth. If you pin each of them around a house on the map, however, they should be easily accessed, so long as you give a link to the proper spot on the map. Again, connecting multiple panoramas is one of the goals of Read/Write World, so keep an eye on that project for new features.