Pictures M.I.A.

After downloading Snow Leopard, iPhoto would not recognize my camera. I used Image Capture to transfer the images to iPhoto, but about 2/3 of the way through the download, a "hard disk full" message appeared and the download stopped. But now I can't find the pictures that were able to upload ANYWHERE! They didn't transfer to iPhoto, but I know they are stuck somewhere because I started with 3GB of memory and am now down to a measly 500KB... I have checked in recent files, in my photo folders... just about everywhere I can think of. Where could they have gone?