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Here is a nice tutorial with pictures. http://www.benzworld.org/forums/w210-e-class/1226700-diy-pictorial-window-regulator-replacement.html
let me know if you need any help, don't hesitate to ask as I strive for an "excellent" rating.
Thanks so much for your help only problem was removing regulator, once i lowered window and saw where the retaining clip was it was smooth sailing. Since that went so good I need info on removing and replacing lighter and ashtray assembly on console.