I'm in the same boat. My problem is that I can't receive Exchange mail,
but I can send. I realized that Outlook is synchronizing the folders on
Exchange...except the Inbox. So, I keep Outlook for Web Access open and
move any new messages into a newly created folder (I called it Outlook
2007 Sync). Outlook then syncs that folder, and I have all of my
messages in Outlook, where I then move them to my PST's Inbox. If I
didn't use client-side rules, I would just create a server side rule to
move all incoming messages to this sync folder and I'd never have to
use OWA. But, I have a lot of client-side rules, so I'm stuck with this
for now.

Wes Hsu