windowed resolution larger than 800x600

[rhomboidspace]

ok for those of us who use high resolutions 800x600 becomes very small in windowed mode, it was possible in heroes 1 & @ the streatch the window when it was windowed is it at all possible to enable this in Heroes 3 and WoG, it doesn't look like it is possible normally but how tough would it be to add this fuction, since heroes 3 is based off the same game engine as 1 & 2 i'm hoping that the video engine is also