Okay. To be serious. I would hazard a guess that you are looking to upsize your images.
With the advent of the new interpolation algorithms in the CS series, there really is no need to look for third party solutions.
There will be some along shortly with recommendations for Genuine Fractals and other programs/plug-ins. But unless you are trying to do something really extreme, I’d stick to Bicubic Smoother when upsizing and Bicubic Sharper when downsizing.
The important thing to remember is that you cannot insert detail into an image, that wasn’t there in the first place.
Hope this helps.
Chris.