Lance is having issues using Skype in OS X Snow Leopard. It always crashes on launch. Leo says that it should work on Snow Leopard. Leo recommends completely uninstalling Skype. Merely dragging the icon to the trash isn't enough. Lance should look for additional files in Application support, and get rid of them.
He should run Disk Utility and App Cleaner to get rid of any traces of the application. He'll want to start from total scratch and then reinstall Skype. It should get backup and running for him. Odds are, there's bad file fragments lurking about that's causing it.
Another tip, use an unnamed Admin account and log into it. See if it will work there. If it does, then it's something in his account that has been corrupted.