Plugin to mass re-align images

Hi,

I’m redesigning the look of one of my sites and I’m going to be switching the sidebar from the right to the left so currently it’s content/sidebar but it’s going to be sidebar/content.

I would also like to re-align the images so that they’re not on the same side as the side-bar. Is there a plug-in that is available that would let me do a mass-realignment of images that were previously uploaded?

If not, if anybody is willing to write a plug-in like that for me let me know how much you would charge by e-mail me at ioliyarnik@gmail.com

Thanks.