please anyone with software recovery experience help me

I have to give a client some photos, but half of the pictures became corrupted this morning. I have a second set but they are .psd files and I don't have photoshop on my personal computer to change the file type. so does anyone know how to corrupt jpg files or am I at a loss?

if you want to take a stab at recovering them, then here http://www.mediafire.com/folder/cr7x8rcd127f3/Help.