I have Outlook 2011 on my running Snow Leopard 10.6.8. I managed to import the mail, calendar and contacts without an issue. Under Outlook > Tools > Sync Services I selected calendar, contacts, tasks ...
I've just been through a bit of wringer with this! :-) I have a client with a MobileMe account and about 350+ contacts in there. He asked me to see if there was "an easy way" to copy the contacts ...