Google has just made Google Voice even sweeter on Wednesday August 25th, 2010. Now Google Voice users can receive and make calls from Gmail. Providing the microphone and speakers are available. Notebook users should have little problems with the requirements.
You need to install “Video and voice plug-in” to enable this feature with your browser. Video and voice plug-in requires Windows XP+ or Mac OS X 10.4+ or Linux.
Google is slowly rolling out this feature to Google Voice users in the United States. So be patient.
Head to Google Voice.