How to put a laptop inside a regular frame and hang it on the wall
http://www.grynx.com/projects/laptop-on-the-wall-walltop/
Total cost was under $100, and could be substantially less if you're savvy.
http://www.instructables.com/id/EUDAPM2RU7EP287IJP/
A Pentium laptop picture frame that solves the hard drive noise issue by fetching images from a server wirelessly, allowing the hard drive to sleep after startup.
http://www.odul.com/articles/dpf/digital_picture_frame.html
A wireless ThinkPad frame running Linux and Freevo. Not so much an instructional site, but displays a cool frame implementation with a large LCD.
http://chrismetcalf.net/blog/archives/2004/10/16/digital-picture-frame/
IBM Thinkpad 600 that is converted into a rotating digital picture frame.
http://www.tacosntonic.com/pictures/Projects/Digital%20Picture%20Frame/
A nice looking digital frame made from an IBM ThinkPad 380
http://www.cei-civil.com/ryanw/
When powered on, the frames should boot, log on to x windows, and start a slide show automatically.
http://www.thewares.net/item/33
how to turn an old laptop into something useful
http://digitalpictureframe.50webs.com/
Building a digital picture frame from a PowerBook Duo 270c/280c
http://www.applefritter.com/hacks/duodigitalframe/
The project focuses on converting an Apple laptop.
http://www.instructables.com/id/EQ54MS1YRDEP2871UC/