Not good, Gary--the impression is rather rude, too Do not speak of your own company/organization/wife etc as 'esteemed'. Try:
Last month, you were selected to work with us as a computer programmer. Please take the following steps to obtain your letter of appointment:
(1) Submit the passing certificate for your major subject.
(2) Fill in the attached form and submit it along with your payment of $1700 before June 25th.
(Personally, I find it shocking that your company is charging a person to be hired. That could well be a criminal offense in some societies.)