One way you can go from Net7 to Outlook is by exporting your Net7 address
book in LDIF format - import the LDIF file in Outlook Express - and then
export from OE to CSV and import the CSV into Outlook. Not the quickest way
to get it done but it should work.

As for To/From Act5?Outlook - you should take a look here
http://www.slipstick.com/addins/contacts.htm  - there are a number of
companies that provide tools specifically for Outlook/Act - you should be
able to find something useful on the Slipstick site.

Karl