Since  PS is clearly a valid program, you need to use the "Open with"
dialogue to change the default program, which is probably wrong. I
suggest Windows Picture and Fax viewer. On my system I added an "Edit"
option for PS.

Donald DeWitt wrote:
> Running Win XP Media Center addition
>
> After adding the program Photoshop to the "open with>" browse pull down
> menu, I'm experiencing a change from the default setting. Now when I left
> click on a picture to view it, I get a "not a valid Win 32 application"
> message. I never saw this message before I added this program to the menu.
> Is there a way to edit this menu and revert back to the original setting?
>
> Any suggestions will be appreciated,
>
> Don DeWitt
>
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