Comparing 2 tables with ado

I am looking for a function using ADO which opens 2 tables in seperate databases and assigns the data from source "Table A" to destination "Table B" .Both Tables have the same data schema with a unique key(CustomerID),If the customerId exists in the Destination table "Table B"  edit its data .If a record does not exist in destination table "Table B" then it must be added .
Cheers T
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The easiest way would be to loop through the source and destination recordsets (make sure they are both ordered using the same key).  When you find a record which exists in tableA but not in tableB add it, if the record exists in both update tableB.

Why is the answer rejected?  Too much like work?

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