Can't get the actual chat client yet, but you can use Google's servers right now. Instructions below, I'm online via my gmail account if anyone wants to test their setup.
Google Talk = Google's new IM service that they're announcing tomorrow.
All you need is a Jabber-compatible Instant Messaging client (such as Apple's iChat, or GAIM), and a GMail address.
Server: talk.google.com
Username: [email protected] **OR** [email protected] (pick one)
Password: yourpassword
Note: If you can't login, try to turn off 'Secure Messaging' or 'Encryption'... etc.
-- TRILLIAN USERS: Someone just told me that they got it working with Trillian, but I can't verify this. Just go to Trillian's plugin page on their site and download the Jabber plug-in, install it, and configure a new connection as below:
"server : talk.google.com
port : 5222
Use legact SSL for connection : not checked"
How to set it up with GAIM on Windows/Linux, or Adium on the Mac:
-- For iChat, just enter the information above.
1. Add an account, select "Jabber" as the protocol.
2. Your screen name is everything before the '@gmail.com'.
3. Server is 'talk.google.com' as listed above.
4. Click "show more options" and make sure "use TLS if available" is checked. Leave "Force old SSL" and "allow plaintext..." unchecked for now. Connection port should be 5222, connection server should be blank... if not just 'talk.google.com' without the quotes.
5. Ta-da! Just login and you should be good-to-go.
Another user reports the following:
"weird, I've never sent you email from my gmail, and now that you're on my buddy list on google talk, it autofilled your email address, and alias on my gmail"
-- The "/me" command works too, even on iChat. "/me says hi" translates to "smash says hi" or whatever if you're not familiar!
Feel free to IM around with fellow GMail users just by adding their addresses to your list! I'm not sure how long this is going to work, but let's make the best of it.