Jerryheavyarms
It is a GNR 19" LCD.
Thank you so much for your quick reply which has helped me to get it as good as I think I can.
I hope I can explain this coherently.
At first I was going into Display, upping the resolution slider and clicking OK. After upping the slider the boxes and text became so small that I didn't notice there were three stages to this operation. First up the slider, (at this stage Apply is greyed out), then you have about 15 seconds to verify. If you say yes the Apply comes back. After clicking this you then click OK to finalise it.
Having got this right, I set it to 1440x900 as you suggested. This stopped the squashed look but made everything that was standard very small. I could adjust text size for what I was working on but permanents like desktop icons and tool bars remained so tiny that the text was almost unreadable. I reset to one slider position down 1360x768 which improved the general sizing (though it is still really too small) without compromising the photographs too much. One resolution size below that brings back the squashed head look. I suppose I must settle for this or get used to changing the screen resolution around according to what I'm doing.
Thanks again, Gertha