[stomachmonkey]

Where did the images come from?

Are they 72 DPI jpgs from the web that you want to print 18"s?

The resolution for print images should be 300 dpi at 100% of size.

If the smaller ones are 300 dpi at 2-3"s they are already 6-9 x's too small.

If they are 72 dpi then they are 30-45 x's too small.

You can't take an image that small and simply blow it up.

Depending on how you do it you'll either make pixels that are 6-9 times normal size or photochop will have to "guess" at what pixels it needs to create, the immage will be fuzzy and look like crap.

If you do not have them hi resolution for your need I suggest you go to istockphoto.com and see if they have something suitable.

2 images from there might cost you all of $10.