These may have come up already, but the application sounds appropriate for a portable app kind of architecture: http://en.wikipedia.org/wiki/Portable_application MIT's Piggy Bank application delivers the most extensive environment I have ever seen through a browser, this might be a good place to look around: http://simile.mit.edu/wiki/Piggy_Bank Piggy Bank is well worth poking around for lots of other reasons as well. art