If your Exchange server has web access, it most likely also has IMAP enabled. If that's the case, you don't really need to use anything to sync it up with your devices, other than the devices themselves.
On the Macbook, you can use Entourage exchange settings, and the IPhone standard mail client. We have people set up this way @ our corporate office.
http://www.entourage.mvps.org/exchan...ngeathome.html
http://www.networkworld.com/columnis...rc=rss-columns
Both of those should help. And you don't need anything special.
-SF