How to build an Instant Message App

[baash05]

Hey, I'm looking to build an Instant Message app simular to Trillian (it lets you use a bunch of different IM accounts).
I'm wondering if anyone has dabled in the IM world and if so if they could give me a lead on at least where to start with the app.
I'm assuming it uses sockets but I don't know what type or what port or how these IM apps work at all. Any leads would be most helpful.

Thanks.
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Dave Rawk.
Two paths diverged in the woods. I took the faster one!

http://www.ONElineapps.com

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[Salem]

Well there's an open source one.

http://gaim.sourceforge.net/

I'm sure there's plenty of information on protocols etc to be gained thereabouts.

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