How to register company in Andhra Pradesh , India. for IT business and better Tax benefits?

Hi All,

I would like to register company in Andhra Pradesh , India.
This new company will be doing business in Information Technology area.
And it will be child or sister concern company for USA based company.

Could any one give us detailed procedures on how to register company and different types of companies and different tax structures and where is the best location in Andhra Predesh to get more tax benefits?

And kind of help is greatly appreciated.

Anil