It's in WarpIn format and you can get it from
http://www.bridge2.cn/bridge2-Hi_v1.6.zip or
http://hobbes.nmsu.edu/h-browse.php?dir=/pub/os2/util/international/chinese
What's new in this version 1.6 - Some bugs are solved and the Bridge2-Hi runs more stable.
Changes in the version 1.5 - Hanzi input in the Big5 encoding is supported. That means you can input Hanzi characters in the web pages or articles writen in Taiwan or Hongkong.
For more info please visit http://www.bridge2.cn and if you have any comment please write me email
Have fun with Bridge2-Hi!