Free SMS from PC

There are many site which provide free SMS service. Yahoo is also providing free SMS in Yahoo messenger. You can try following sites(I don't know whether they work in your area or not): http://www.smsgupshup.com/ http://imobile.ibibo.com http://www.indyarocks.com http://mginger.com/index.jsp http://www.mycantos.com I use ibibo and MyCantos and they are absolutely free.

friend i like to repond the people.who have zero responses so that he/she may not be depressed while creating the discussion. friend its great to hear that free sms from PC.its for all over the world. is this required any extra software.which website providing this type of special feature.which is new technology these days.tell me in detail