There is a lot of talk about Yahoo instant messenger trying to block other messengers suck as Trilliam from using its Protocol to connect to its server.

I found this article about the Yahoo Protocol. Its explains in great detail how to decrypt it. Its just some information thats good to have under your belt.

http://planetsourcecode.com/vb/scrip...48935&lngWId=1

This article was ment for VB but if good for enything else.