I've read the instructions on the brother-site, but I refer to the thread http://www.linuxquestions.org/questi...h-cups-846633/
where I found the solution. As far as I understood what was going on, both, the cupswrapperdriver and the ppd file are shellscripts and therefore independent of the architecture. Also it seems that they (Brother) don't make a difference between 32 and 64 bit for every distribution.
Afaik, the "drivers" are only ppd files and there don't come any binary-files into play.
Anyway, I'm sure virori will get it work