Rulzzz, I second the argument to start slowly and build up steam. If you're going to run, commit to the long game, and realize that there's plenty of time to build up your miles. I started running last year, starting off with the Couch to 5K program (google if you're unfamiliar with it-- it's very popular). Over nine weeks, it had me running every other day (walking/jogging at first). At the end of the nine weeks, I was able to run at a good pace for 30 straight minutes.
Since then, I now run just about every day. My usual daily run is 4 miles each morning, but I try to do a 6+ mile run each week. I still think back to when I started out a year ago, and my knees hurt after just a 10 minute walk/jog session. I guarantee if you follow your own pace, and let your body adjust, you will be rewarded.