Have a look at this thread.

"ultimate cd"

Someone kindly pieced together a lot of e34 stuff and made it available (including the manual). The thread includes a bunch of links, so you'll have to sift through them to find a good one.

However, please buy a harcopy of manual as:

1) it supports Bentley who did a great job

2) you'll be glad you did as its much more user friendly

Dave M