How do I export the GAL (Global Address List) from an Exchange Server in one domain and import it into an Exchange Server in a different domain?

We have been recently acquired by another company. Obviously we are on separate domains with no immediate plans to "consolidate" our networks. It would however be convenient if we could export/import each others Exchange GAL so that we would more easily make contact with those in our parent company. We are not looking to just get an export that can be imported into an individuals instance of Outlook, but actually be imported back into our Exchange GAL.

Any thoughts as to the best way to go about doing this?
reelpiperAsked:
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Mike KlineCommented:
I've used a product called simple sync that synced GAL info.  
http://www.dirwiz.com/
There are other methods as well
http://www.msexchange.org/tutorials/GAL-Sync-Identity-Integration-Feature-Pack-IIFP.html
I haven't used IIFP in production but I've seen other comments on here where people have done it.
Thanks
Mike
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