I've been loitering on this forum for a while trying to pluck up the courage to patch my pb, finally decided to do it today and initially had a "no CD" error on the HU (Audi) :-/. Found the answer using the Search facility
(great tool...!), corrupted my ramdisk.sig and ta-dah! a cracked pb and now 80gb of music in my car.
Needless to say I'm dead pleased that it worked and thought I should post to say thank you to everyone who contributes to the forum, and of course to the guys who spent the time writing the hack and keeping the site up and running.
Keep up the good work and thanks again!!