A simple img alignment

At first I thought this would be a cinch, but I can’t work out how to simply align this img to the right so the text wraps, with some padding as well.
http://newbiedesigner.com/mac/save-time-save-money-buy-a-mac/

By default the img was assigned a class called alignright so I went with that and created a class with attributes but so far ..nothing.
I’d also like to create a alignleft and just assign the image to suit.

css anyone?

Thankyou.