Just quickly glancing this thread.... there is a lot of info to be found browsing through the coding section.... more specifically these two fairly straight forward links and guides (first post of each link is enough)
For installing the software (and link to software)
http://www.e90post.com/forums/showthread.php?t=859474
Some tutorial guide
http://www.e90post.com/forums/showthread.php?t=451145