Thanks very much to you both, MaG and Jenny100 !!!!
I can always find help here at Gameboomers and it is MUCH appreciated EDIT :
Well, I appear to have fallen at the first hurdle
I had successfully changed the download destination for Big Fish games to my external drive because when I go to Game Manager/Options/ Downloads, the download location is
showing as F:\BigFish.
["F" being the drive letter for this particular external drive and "BigFish" being the folder I created on it to take downloads of Big Fish games.]
So, I downloaded a game (one I had recently played and afterwards uninstalled) but it downloaded, installed and was activated and came up as immediately playable on my main Win7 machine.
And the BigFish folder on my F Drive remains empty.
Any ideas of what I've done wrong - or perhaps failed
to do ??