Not an expert, but I stayed at a Holiday Inn Express last night.
It's the long way to go about it, but I've used this in the past and it worked, on Excel, Word and Picture files.
I don't know what OS you are using, but somewhere on your desktop, there is a Search function. On Windows Vista, select the ""Start" Icon and it's right there above the button. On Windows XP, hit Start and select Search.
Then I put one of the following and hit enter:
*.jpg or *.jpeg
*.png
*.gif
*.tif or *.tiff
The * is a wild card. Don't know what extension the pictures are, but jpeg's are fairly common.
It's going to look for everything, at least on the user ID you are on, as Tarq57 suggested.
You can suspend the search as soon as you spot one of them. Then just select the picture, right click, select Properties and it should display where the picture is located.
Good luck.