thx!

As the source is included you could just change the resolution and recompile it. (if you've delphi)

go to line 479 in the *.dpr file and change glCreateWnd(800, 600, TRUE, 32) to glCreateWnd(1280, 1024, TRUE, 32)

this should make it run in the desired resolution. But don't complain if it gets laggy!