Hi John,

Thanks for this superb response and advice. I did go this route but found miss matches in the link you correctly appraised. Thus abandoned my ISO editing and got the 'pimp-my-nav' software. If I had your comprehensive guide I am sure I would have been OK.

I have to say 'pimp-my-nav' appears excellent and in no time at all I had my new disk and Speed Camera POI's on my Nav unit.

Shame more than 1 POI set cannot be shown at the same time.

Anyway, thanks again

Julian