frau kaleun,
Right,I carried out the simple procedure as instructed and to be honest (at the moment at least) I cant tell if its actually altered the res,although in areas (mainly around the dials in the control room) it does look a bit sharper.I will revert the res fix down to say 800x600 and see if it changes the res,at that level it should be obvious.There is a little bit of jagginess around the graphics but that is probably due to having no anti aliasing on,GWX3 is quite intensive as it is and slowdowns would probably ensue.
I will let you know what happens as soon as I am able