Ah ya, let me call you WordPressian if you are a wordpress fan. Last night I developed a small plugin for bengali wordpress users. If you install this plugin you will be able to write in Unijoy, Phonetic and Plain English mode. You will get three buttons as shown here

Then you can type Unicode on se,ecting either UniJoy or Phonetic

And you can write english anytime by clicking English button or pressing Control+C

Thats it. I will release this plugin under Ekushey.org by Tomorrow