adding an image to a css template (in dreamweaver)

Hi I am creating a webpage on dreamweaver- just learning some css (opposed to tables) and I am doing my first site and I am having a problem with image positioning.

I downloaded a template and thats how I got the basic page design set up (didnt create it all myself)

I would like to have text on the left hand side, and an image on the right hand side.

Would I do this by setting a position on the image? Or would I do that another way?

Here is an image of what I have now-  http://cellprophones.com/contact
I want to have the text on the left, and the image on the direct opposite side  (basically the opposite of what I have now). Any info is appreciated.