Had a little go at this in the end tonight David. Was much more straight forward than I thought, once I'd got my head around what tool I was projecting onto what and why etc. Worked a charm...the actual 'project all' bit. After a few exports and a couple of crashes, I got the normal map to render. Mixed results. The veins running over the wrists look better, and the wierd glitch on his face actually looks like it could sort of belong there, rather than being the error that it is and looked like before. On the flip side, several other bits look worse, less smooth, particularly on his pecs, and tensed forearm muscle. Either I may be able to combine elements of both in PS, or it may be worth going over some areas again in Z and trying some other normal map settings. I treated myself to a production render as the last one of the day.