Pls help H1b from Japan for Indian

Dear All
I am currently in Japan from my company in India and I am an employee of the Japan Branch of my company.I have an engineer status visa in Japan for 5 years.I hold an Indian passport.

Is it possible for me to attend the H1B visa interview in the American consulate of Japan.
Are there more chances of getting the visa if I attend the interview here in Japan or will it be adversely affecting.
Are there any good consultants in Tokyo which does the H1B processing stuff.

I am planning to find an employer in USA and try to make him file H1B for me.

Any help regarding the matter is appreciated