That sounds good
Which VDO system will it be?
And you're hacking the V28-firmware with OS9000-tooling?
I'm very interrested in this part as well, as I don't like the current MK-IV system at all! The navtweak programm is nice however it does not really alter the functions of this system...

My reference is a Garmin Streetpilot 2610 which I used in my previous car!
I just got my new car (Z4) with the build in satnav pro....
I know now that the Garmin is way superiour compared to the MK-IV system!
Especially the Graphical representation, routing and usability!
I have a big list of thing I would see different in my current Z4 satnav system. Maybee I could do it myself..... or together with others owners!

Cheers,

Rene