Step 1: Some stuffs
() A spare computer you don't mind losing
() A wall
() A drill
() 2 screws
() 2 wall brackets
() Sheet metal
Step 2: Get your paintings
Step 3: Some quick adjustments
Step 4: Make a space in the wall
Step 5: Place CPU and feed wire
Feed the wire DOWN!!!!!!!!! Then reach in with an Allen wrench and take the end out.
MAKE SURE THE OTHER END IS STILL OUT!!!!!!!!
Step 6: Final steps
Step 7: Now...
Use Picasa again to start the slideshow, and leave!
The paintings will automatically cycle.