I think first you should go through the legal formalities required to set up all this, get that all set. Second, contact the dealer. Third, chart out a proper business plan. Analyze long term goals and short, final business outcomes etc. Once that is done set up shop and begin marketing.
You have to figure out how to beat your competitors, I am sure there are a lot of hardware/software retailers in India. You can ask for help an Online store builder professional, he could tell you what are the trends now and how to attract more clients by making an interesting and user-friendly website.
I have worked for several companies that were parts distributors for larger companies. Not only is there a lengthy agreement to be signed, but your company will also be put under a low powered microscope. Your Integrity, ability to move parts, and financial stability will be scrutinized.
---The older we get, the more excuses we make for not chasing after our dreams. But truth is, goals are attainable at any age.