In order to view the Tamil (Unicode) Version, you need a browser that supports Unicode. Here is how you can enable Unicode support in Internet Explorer and Netscape.
You also need to have one or more Unicode Tamil fonts installed on your computer (example: Latha, Arial Unicode MS). Here is a list of Tamil Unicode Fonts.
If you can read the following sentence in Tamil, then your computer/browser has Unicode support enabled.
நீங்கள் இந்த வரியைப் படிக்க முடிந்தால் உங்கள் கணினியில் யூனிகோட் ஆதரவு உள்ளது!