This post by linh is the way to go. It will save you money. I did it myself using bullsh!t tools in @2.5 hours.
http://www.benzworld.org/forums/forums/thread-view.asp?tid=1184158&posts=20&hl=linh
http://www.benzworld.org/forums/forums/thread-view.asp?tid=1184158&posts=20&hl=linh