We need to modify tesseract-ocr to support more image formats. So I set up a project host at github and pulled the source code from tesseract-ocr's googlecode host.
So, to get the new code base, just type the following commands:
1. git clone git://github.com/bergwolf/tesseract-ocr-copy.git
2. cd tesseract-ocr-copy
5. make install
works perfect :)