[Plugin: NextGEN Gallery] Cropping uploaded images (originals) to specific size

Hi,

I would like to be able to crop the images to a specific width and height when they are uploaded rather than resize them proportionally.

Is this possible already (i dont think it is)?

If not can anyone points me in the right direction of being able to do it?

Thanks

http://wordpress.org/extend/plugins/nextgen-gallery/