Today I downloaded AOO-TA and installed under Windows XP. Tamil text were not displayed properly and I could not type in Tamil word. Then I reported this in Bugzilla and I got back immediate reply, there is some thing wrong in the OS. Check it. Then, I downloaded, a small package from Google, installed as per the instruction and now I am able to type.
Google offers phonetic typing. For example I want to type my name in Tamil, I have to press the following keys kadal If I want to type as per the Tamil keyboard, then I have to type the following keys fly With out these pre-requisites, AOO-TA can not be used. My suggestion is , while installing AOO, there should be a screen telling about this prerequisite and providing required links, so that they can install the same and use AOO-TA