automagically opens Preview, then I get an error in Preview

When my daughter sends pictures attached to her e-mail
Preview does not recognize the file and won't open it.
Any ideas?
Thank, Steve

Has anyone tried this product? It is pricy. ($225.00)
Is it worth it? Does it work?
Thanks, steve

I dug out my old Quadra 610 for my grand daughter to use but it won't boot up. All i get is a blank desktop or the "at ease" window. I have no disks. I do have an external cd-rom drive but no cds will run in it. any ideas?

steve258