I Just want to post a comment in my friend facebook wall... I feel if that comment is in Tamil it will be more expressive.. There are more services available for online like http://www.google.com/transliterate/indic/Tamil . But in the future if i want to type in word or excel offline will be useful.. i just google it.. Here the steps for Tamil keyboard for ubuntu..
How to type tamil in ubuntu ..?
Goto System → Preferences → Keyboard .
[![image0](http://1.bp.blogspot.com/_X5tq9y9xv2s/TTCYSZRV3zI/AAAAAAAAAmM/JkbvDM0WT7k/s400/keyboard.png)](http://1.bp.blogspot.com/_X5tq9y9xv2s/TTCYSZRV3zI/AAAAAAAAAmM/JkbvDM0WT7k/s1600/keyboard.png)
Then choose the Layouts tab. Click the "Add" button. Then Change the country to India and choose your tamil layouts. For myself i choose "India Tamil Unicode"
[![image1](http://3.bp.blogspot.com/_X5tq9y9xv2s/TTCYnQfjWaI/AAAAAAAAAmU/_cTT9U7j1sQ/s400/keyboard-Choose%2Ba%2BLayout.png)](http://3.bp.blogspot.com/_X5tq9y9xv2s/TTCYnQfjWaI/AAAAAAAAAmU/_cTT9U7j1sQ/s1600/keyboard-Choose%2Ba%2BLayout.png)
Now you can see your layouts in the window.
[![image2](http://3.bp.blogspot.com/_X5tq9y9xv2s/TTCY5i_a8zI/AAAAAAAAAmc/dLpqBbV17EE/s400/Keyboard%2BPreferences.png)](http://3.bp.blogspot.com/_X5tq9y9xv2s/TTCY5i_a8zI/AAAAAAAAAmc/dLpqBbV17EE/s1600/Keyboard%2BPreferences.png)
You can change your typing language using the keyboard layout on the top panel. By clicking on this applet you can change the language layout what ever you want.
[![image3](http://4.bp.blogspot.com/_X5tq9y9xv2s/TTCZN-A-HUI/AAAAAAAAAmk/P5fRGTP1fQQ/s400/keyboard%2Bapplet.png)](http://4.bp.blogspot.com/_X5tq9y9xv2s/TTCZN-A-HUI/AAAAAAAAAmk/P5fRGTP1fQQ/s1600/keyboard%2Bapplet.png)
Now i can type in tamil any where in ubuntu.
நன்றி ... அருள்.. :)