Many times I am asked on how to enable Tamil Unicode support (both display and Keyboard) in many Operating Systems. I have written posts on how to do with Windows, but today I found this well written article from Wikipedia that gives step by step instructions. The article includes steps for most Operating Systems including Windows, Mac and many variants of Linux and applications.

Read the complete post at http://www.venkatarangan.com/blog/2007/08/30/Enabling+Tamil+Input+And+Fonts.aspx