Ah, I was right. The registry entry for "Mailto" still launches GNOTIFY.EXE. They've just cleaned up the user interface so that you don't actually have to have Google Notifier up and running, and it doesn't look like it's doing anything special on the screen. But the truth is that they *DIDN'T* actually set the default mail client to the Gmail web site. They did like I said: They set the default mail client to GNOTIFY.EXE which in turn calls up the web site and does the necessary trickery to log in and call up a "Compose" screen.