I am afraid I don't, this is one of the reasons I still run ACT! 5.04 at the office; I was warned early on that one of the outstanding issues with the early releases of ACT! 6 was Outlook compatibility.
Again, sychronization vs. importing may be the key. The way I looked at it on my home system, which has ACT! 6, was if email was set to look at MSOutlook, then in the email window, that's what you see. In v5, anything I wnated to save with the contact, I simply made as an attachment.
I have not played with that for activities. sorry I can't be of more help. Have you tried one of the newsletters (ACT! in Action or EasyACT!) They will answer questions directed to them and often print them in the newsletter as well.
swk