
Nope that one isn't supported by my graphics card either, so looks like my current 1280 x 1024 with the aspect ratio preserved as above is the only option, giving me square image with wasted space either side.
I think I am still probably getting roughly similar size picture to that on my 17 inch square monitor. Actually just measured and it does :)
I suppose it will work when I eventually upgrade to a new PC, as this one is coming up for 5 years old and computer guy says it is like Porsche with a 1600 engine, the processor isn't Man enough for the upgrades it has had.
Thing is I am not even using 20% of my hard drive memory.