Internet is the only thing which is required to remain connected with G-Talk via Nokia Phone.
First you will have to install JAD - Java application Descriptor. This file helps mobile phones to interact with the web services. The size of the file is 1 kb.
If you are unable to install Java Application Descriptor or your phone does not recognize the file, then you can also install JAR - Java Archive file format, with 61 kb size.
After installing JAR, go back to the download menu in your phone and type http://wap.gotalkmobile.com/ in the Nokia’s Internet Browser WAP.
Next you will have to follow simple instructions and the download will be completed.