Well, seeing as how I thought that I may have mucked something up - I deleted & then reinstalled PCLinuxOS 2012 from VM Virtual Box.
On the new installation, I tried following the PCLinuxOS user guide to get Windows Shared files accessed through Samba Shares but came up with the same problem as per my Subject matter here, partly it must be said because the documentation is no longer current. I cannot find any relevant help on the PCLOS forums and was saddened to find one post that said they never got Samba Shares working in PCLOS.
So have finally decided to throw in the towel and forget about PCLOS. I regret the decision but there is a lack of information and assistance on this problem generally that seems to me to be particularly problematic to this OS and I would be worried about future difficulties, as I am completely ignorant of the vagaries of Linux.
Never mind, c'est la vie - thanks to everyone who tried to help.