Gazza.
Sorry.
Thanks for your help.
I feel such a plonker now.
Did warn you I am not computer literate.
Now I have been using F/F with Windows Vista for a while with no problem until recently..
Then bang.
Couldny understand what had changed.
So I decided to uninstall F/F and re-install.
I then found out there is a F/F particularly for Windows Vista.
I have installed that Vista F/F and have now managed to list.
Fingers crossed the problem is fixed.