You may think that I want to introduce you with avro for writing bangla in yahoo messenger. But Ijust want to inform you about a plugin for yahoo messenger 8 or later which enables you to write bangla in yahoo messenger while you chat with others. This interesting and important plugin is made by yahoo india. I think it will be helpfull for people who likes to chat in bangla in yahoo messenger. For more datails please this page here.
bangla chat
There is one post tagged bangla chat.