Your car will be quite similar the 124 in this article. The 201 uses the same type of clips and the door handle disassembly is the same. The only difference will be in the mirror assembly removal - on the 201 (with a manual drivers mirror) there is a small removable piece of plastic on the back side of the adjustment handle and after that is removed I believe that black plastic piece is just clipped in.

http://www.peachparts.com/Wikka/W124DoorPanel

BTW - this is from the DIY Articles link above - theres lots of great stuff there!

Let me know if you have any questions - I've removed both the 201 and 124 door panels before.

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Daily Driver: 02 E430 4MATIC
In the family: '03 E500 // '04 ML500 // 64 220SE