Treadmill Running
Running on a treadmill is not a simple as putting 1 leg in front of the other. Far too many people run either too slow, never actually gaining and real benefit from the treadmill machine.
If you can try and run in front of a mirror as you will then be able to see clearly how you look running - it can sometimes be quite scary, but it will always be useful.
This is a very good video explaining to you how to run, which can be used to run either indoors on a treadmill or assist with your running technique outdoors.