Is it possible to add a cigarette adapter to a car?

I want to buy a Satellite Navigation system but my car doesn't have a cigarette adapter.|||yes you can check some out here http://painintheexhaust.blogspot.com|||yes go to autozone or one of those car parts places and get one from them and have them talk, you through it. Don't listen to any instructions on this stuff let a pro face to face tell you how|||Yes. Called a power plug or cigar lighter. Make sure it's adequately fused though. Any parts store should have them.|||Yes you can buy an additional lighter/accessory receptacle at an auto parts tore or Walmart, K-Mart or many other places.