I may not have made myself clear on this.  My bad.  What I mean by my previous post is that for me to re-render images at 300 dpi and still maintain the size aspects is a much more arduous process since you can't "resample bigger".  If I moved the image into photoshop and went from 72dpi to 300, the image would shrink by about 350%.  To maintain the aspect ratios, I'd have to do one of two things that I know of:

1. Re-render the image at the new proportions
2. Resize to 300dpi, print and then rescan at a higher dpi for the size I want.  It's iffy but that might work.

Maybe I should email them and get the details before I get too crazy about this.  I don't even know if I have stuff they want anyway.