What is a progrm i can download that will translate ENglish to japanese as i type it?

I was told by one of my friends that there are programs across the web that when applied to my computer, can translate english characters to words in japanese such as if i were to type in "bakaga imasu," as i typed it, the program would automatically change it to ばかが います after i was finished typing the entire word or passage.|||Use http://www.thismeansthis.com translates most languages for free.|||try JWPce