Many times requested, a lot of friends and iChat buddies and Twitter friends want to have this result: The tutorial starts after the jump:

1. Download PSI from the following link: download PSI for Mac OS X
2. Start PSI and create an account and name it with any name you want (it’s not your login name): Then, enter a server name (mine is njs.netlab.cz and is very reliable) Choose the username you want and the password you want, then click “OK”: your jabber account is created:
3. Now go online with your created Jabber account right onto PSI (with a right click like in the following screenshot):
4. Now we’re going to configure the Twitter account: right click again on your account name on the PSI main window and select “Service Directory”, a window will popup with a list of services you can connect to (you can do the same with MSN, Yahoo and more): select the Twitter Transport Beta and right click on it: Select “register” and enter you Twitter login and password.
5. Now go to iChat and go to preferences cmd + , and go to the “accounts” pan: Click on the + button and select “jabber”, then enter the login and password you created in step 2
6. A lot of popups will appear, you have to accept them all, now you can use iChat as a Twitter client; to Tweet a friend of yours double click on his name in the iChat Twitter Contact list and Type, if you want to post a Tweet, you have to double click on a contact named home@twitter.jabbim.com and write a message.
7. Only side effect for Growl Users
   

Posted in Macintosh Tips & Help, iChat