Hey gang...not trying to plug our products here, but i have a really cool work around if you are interested:
I run VMware FUSION on my macbook pro.$79
I run Outlook in my Windows XP Virtual machine.
I run Entourage as my primary Mac Mail client.
I exported my entire PST (2.2gb) from my older machine
saved to usb drive
plugged usb drive into my macbook
fired up my VMware Virtual Machine
Fired up OUTLOOK in my VM
mounted the USB Drive
File>OPEN>outlook data file
pointed to the .pst file
voila, it opens
it takes an hour or so, but it imports the entire pst
then, sync with our exchange server
when you open up your Entourage, it too syncs with your exchange server
all your folders, messages, contacts, etc pop into your Mac Mail client
HOWEVER: this does assume you are receiving mail by and through an exchange server, however, the use of a virtual machine as a medium saved the day
hope that helps.
T.Rex @ Vmware