Hi,
I've asked the same question in apple store and they don't have an answer! You can sync photos, music files via active sync that comes with os x, but there is nothing to sync contacts, emails ...
As a solution you can try this (http://www.markspace.com/missingsync_windowsmobile.php) or wait for mobile.me. But I don't think that mobile.me will support syncing with windows mobile devices. as the adve says that you can use it to sync mac, pc, iphone or ipod touch.
Good Luck