[craigreilly]

I am running Exch2007 on Win2003. I also needed some new hardware to support 64 bit. Once I got the machine up and running, Exchange easily moved our mailboxes for us. We did this 1 at a time so we could call our people in the field and have them change their Outlook settings to the New Server.
We are still using our old Exch2000 box for Spam filtering (kind of link an Edge server) as the 64-bit version is still in Alpha.
As far as WM6 Activesync - not bad. I wish when I deleted on my phone that is auto synced with the server to remove. But no big deal. I get mail often enough that it updates itself. Sometimes, I will see a message as NEW again on my desktop even though I read it on my phone - but have not received any messages since I read it.