I am trying to start a small retial business in/near Richardson, TX?

Probably a gas station or a dollar store shop or a laundry shop or a small snack shop. By profession i am a computer programmer and would like open a second source of income so that I can leave my job in some time and start a full time IT company of my own. But I am open to ideas. I have a full time dedicated person who is willing to join me in this venture.

That is a huge step mate. Have you considered any chains? Like Wing stop or Denny鈥檚?
Depending on your capitalization, something like that might be a better option. Don鈥檛 fund a business you do not know about (as a new startup). Maybe you could save your money right now, start talking to a financial planner about different things you can do with your money as a business to protect against taxes etc and hopefully find a niche in your IT company for your friend, in the future. Maybe you could take the interim to brush up on bookkeeping or other skills you will need in your IT. It sounds like you are wanting just a little more money to help get you where you want to be for your IT, don鈥檛 throw it into a high-risk or volatile market like a dollar store or gas station. That鈥檚 my opinion I don鈥檛 know you, I鈥檓 sure you know better.

Not sure what your real question is but,

The last thing this world needs is another dollar store and gas stations are pretty well tied up by owner groups. I would think that your best bet would be the laundry facility. I believe you can buy into a franchise or establish your own. Richardson has a high immigrant population that needs and uses public laundries.