Best way to remove duplicate contacts?

[NewYorkLaw]

I made the mistake of allowing plaxo to synchronize yahoo contacts (which I had not used in a year or so) into my mix with google contacts and outlook contacts. Now I have about 600 extra contacts (for a total of about 2,000). Many contacts I just have to delete (no longer needed) but many more duplicates.

Other than scrolling through outlook and sorting by firelds for create date, name, phone number, company, etc., and manually deleting duplicates, is there an easy way to weed out duplicates?

Pete