As all of us wait and all the rumours spread, now Google come out with its new IM for its users, Google Talk.
All you need is just a Google account, and the client application. The application is just 900KB in size, and can be downloaded from here
The application is simple, small in size, and the file is all the software that you need. You dont need to redownload other program to use it. Google Talk support Voice Call with your buddies.
Download now, and start inviting your Google friends to your Buddy list!