Its really good to hear that Tamil Nadu is moving on its path for openness by providing Laptops for students with Linux pre-installed. :).
Have a look at this link : http://www.mynews.in/fullstory.aspx?storyid=7178
 
Kerala too is planning something similar : http://www.kerala.com/news_kerala_OLPC_scheme_for_0_2075.html
:)
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Regards,
Amit M Surana

My Blog: http://blog.suranaamit.com/
GMF Documentation: http://gmfdoc.suranaamit.com/