Notifysync and Astrasync are both great pieces of software that talk to an existing Exchange server.

Do some Google searches, I think it's honestly hit and miss. Most customers rave about one and then go and bash the other - so once again "hit and miss"

I will say this for NotifySync, their technical support is apparently quite a lot better than Astrasync, but this is all 3rd hand information from what my own customers tell me...

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Vincent L
Sync your Contacts/Calendar/Notes/Tasks wirelessly from your PC to BB - http://www.thinkpost.net