The website mentioned in my previous note is called www.alldata.com.
I recall they sell you repair info about new cars for about $20/year for one car and $30 for two I believe.
I guess is makes sense - I think will be at least another 2-3 years before MBUSA releases the CD service manuals for W210. It is the only place that I know that has info on how to properly do work on your car or to make sure that whoever you hire to do it will do it right.
If you decide not to get alldata.com, let me know your fax # and I will fax you the exploded views I have (for e300TD).