DANA SUTTON  Seventy five bucks for a bunch of scripts?? You can buy Bento, which talks to both Address Book and iCal, and have twenty five bucks left in your jeans. Assuming it works, this would be a great $10 utility, but that's about it.  
(Version 2.0.3.2)

FRUSTRATED  Very dissapointing. The documentation is very poor. Don't waste your time.  
(Version 1.0.1)

ANONYMOUS  Beware!! Address Book Manipulator does not go as far as you may believe. It only works with some of the Address Book fields and the example included int the download does not demonstrate how to synchonise data ( the example deletes all records and replaces them with the records from the Address Book). It cannot work with Groups and other limitations and it would appear that FM2AB and AB2FM, far less costly applescripts, can sychonise better. Support was slow, maybe because of summer and the reply from the developer appeared to be that if one was willing to pay $150 an hour, the developer could custom develop the features that one would expect as part of the original solution.  
(Version 1.0.1)