Hi All: I hate to say it, because I am a Mac fanboy, but tonight I went from MobileMe, which lost all of my contacts to a hosted Exchange system. So far it looks like everything works. Plus I could switch back to my domain name. It makes me sad because I wanted MobileMe to work so bad. Anyhow, I found the company on www.microsoft.com/exchange, under the partner list. They are called 123Together.com and setup was simple. Just wanted to pass it along.