Hi Graham, welcome to the forum, and congratulations on becoming county moth recorder! No doubt you'll be able to get advice on MapMate from here, but there is also a Yahoo egroup dedicated to MapMate advice and support, run by volunteers including other moth recorders. Let me know if you'd like an invitation to join that egroup.

And if you haven't already seen it you may be interested in the MapMate training material that has been compiled for BSBI:
http://mapmate.bsbi.org.uk/

Martin (CMR for VC22)