http://12.96.14.5/~engatwork/CkStrap.htm
here are pictures and description on changing the door check strap on the E320.
Thanks to Jeric for helping me out on this as far as getting it on the web - to me the easy part was changing the strap. Thanks to Blake for helping with the pics - that is his foot in one of the photos - he is 8. Thanks to everyone on mercedesshop.com that has helped me gain the confidence to do this type of stuff.