I setup my Sprint 8830 Blackberry to my works Exchange server and I get wireless updates through the desktop redirector perfectly.

Now another guy with the Treo 755P, I was able to connect it to our exchange server and get updates when he syncs through USB. The treo has the unlimited data plan as well. Is there a redirector that can run on his desktop like the blackberry to receive emails like mine?

We only have an exchange server, we are not running imap/pop3 or active sync