Thanks Darrel,
I have now got it all working. Starting meProg before doing a 'compile and program' complains about an instance of meProg already running. After a couple of goes I got the compile to work but then meProg complained 'no port found'. Under meProg\file\port I could not select 'AUTO' for some reason - all greyed out. After a complete shutdown and restart it eventually all came good. I now have Win7, PBP 2.60L, MCSP 3,0,0,5 and meProg 4.40 all playing. I lost a full day farting about with this Win7 nonsense.
On my workshop PC I am sticking with WinXP and have bought a second identical XP system (while they are still available0) which I am ghosting so both PCs are identical.