jimmy1973, just follow the link mgerbasio listed. I followed that when I set mine up and it worked great.

bb8310, you have to set it up on windows first with psi to create the transports, and then once that's setup you can just use Google Talk from there on out on your BB and not worry about the desktop part.

I don't use the transports anymore, I use the RIM Windows Live Messenger and have been for awhile now. I can't remember the MSN transport I used for Google Talk, but it was very reliable and worked excellent. I think it was msn.jabber.no or something similar like that.