iPhoto only recognizes photos taken with the iPhone. These photos were put on the iPhone from a PC that is now crashed.Assuming you have a Mac, launch iPhoto and import them from the iPhone.
250+ emails.Send them to yourself in an e-mail. That is about the only way to do it, since Apple doesn't give you Filesystem access.
TEG
I plugged my iPhone into my WinPC and use the Camera and Scanner Wizard to retrieve my phones. Have you tried that?