HELP! address book sync question

The owner of my company has 1400+ plus contacts in his local address book (names.nsf - Lotus Notes) He's the only one we have doing a wired sync of the address book in fear of duplicating his contacts. He uses all types of special characters in his addy, which I've read can cause duplicates. Anyhow, I took his address book, set it up on a test machine w/ a test blackberry and sync wireless. Problem is activation of the blackberry completed and address book completed, BUT it's one address short in the blackberry compared to his address book on his PC. Anyone know of any tools, that can help me, rather that going line by line looking at each contact?

Thanks for any assistance!