alright, 2 questions: does the engine cut away some of the skycube? and is any part of it stretched more than the rest?
the reason i ask these is because no matter how big u or the engine scales the skycube, it ISN'T going to get more pixellated. the only thing that can cause more pixellation is that the skycube gets scaled DOWN. this would mean a smaller image, which has to stretch over a larger area. i hope u understand what i mean, because it isn't really easy to explain, but the area covered by each face of a sky cube is always the same. if u see pixelation, it's because the image is a low enough resolution that it has to be enlarged substantially to fill the required area. what u need is a higher resolution image for the skycube.
julz