http://www.eautorepair.net/
Mitchell's repair manuals at the above site.
Out of curiosity, I bought a 7 day subscription. I have access to a high speed printer and printed everything for my car. A lot of the same photos as you'll find in the MB manuals/CDs, but in many cases, a better text explanation of how to resolve problems/make repairs.
Hell of a deal for the $7-$8 I spent.