Evening Keith,
Welcome to the looneyzone.
Nice motors the D2 TD5.
Just a couple of things you may find useful.
Download the RAVE manual, it has the workshop and owners manuals in them.
http://www.myrangerover.co.uk/rave-workshop-manual/
Try and see if you can find a friend or make a new one with the nanocom / hawkeye/ lynx that works on the D2 , you may need their help at some point.
Also, just because I cannot resist the urge to say it. Make sure you have the EKA code.
Apart from that, any questions , chuck them in the Discovery section.
Cheers