'welcome, 7x7
Yes you can transfer Outlook Contacts to the Windows Address Book in a two stage operation.
In Outlook go to File>Import and Export> Export to a File
Click "Next"
Select "Comma Separated Values (DOS)" or (Windows) - I think they should both work.
Click "Next" and be ready to Install the Import/Export engine.
Give your "csv" file a name and location and select the Outlook Contacts folder as the source.
When done, close OL.
Open the Address Book directly or through OE.
Import the "csv" file you created from "File>Import>Other address book>Text File (Comma Separated Values).
That's it basically but you'll probably have some editing to do as this process finds inconsistences which you didn't know existed.