I have resolved my own problem. With Windows 7 although it is set at max resolution for my monitor size (check what size your monitor is to determine if you can change it up)1024x768 is upto 20" monitor, larger ones resolution increases.
What I did was to change the Graphics settings. It turned out my refresh was set to 60hz and screen was at low res setting in there although it was showing at highest setting in the resolutions control. I upped them to 75hz refresh and screen setting to match 1024x 768.
Problem solved. I now see all buttons so could use menu button at bottom of game screen (orange if you can't see full button try clicking in that area).
Hope that helps someone else.