Nope. It didn't work like that. Was a pain in the ass but I basically dragged about 200 messages at a time into a folder on the desktop, renamed them with the .eml extension and copied it to a CD and finally dragged those .eml files into the inbox folder in the Windows version of OE. Some of the messages with the same subject header didn't make it without overwriting the other messages with the same subject headers. If I would've dragged all 6000 messages out of the Mac OE, it would've crashed or freeze up the computer.
As for the Address Book, that too was a pain in the ass because the CSV exported data from the Mac didn't have the proper mapping data lined up. I had to manually edit the stupid thing in Excel in order for the fields to import properly.
I REALLY wish Microsoft (AND APPLE) would allow more flexible import/export functions in their Mac versions of applications!