Panoramic picture help

Hi, this time I need some help again in graphics
Now I have problems with panoramic pictures. I tried to find a program which is suitable for this work, and I decided to get Vue 5. I really like the problem, but I was really disappointed when the panoramic pictures I made didn't fit on the cylinder of AM... I read the help file of Vue, and if I didn't miss anything, then it said I created cylindrical panoramic pictures (there are another option which I could use to make spherical ones, but of course that didn't fit too...
) So my problem is this. i can't understand what's the matter: I tried to use the original resolutions (800*600 and things like that) and the resolution given in the example game (2048*2048 I guess) but none of them worked. The problem is with the sky and the ground: at those points you can see that you are in a cylinder. And the whole image is not realistic (not due to the lack of my modelling abilities... ): the straight lines are curved and things like that. So it doesn't work. Anybody who knows whats the problem and whats the solution? If it's possible, I don't want to work with another software...

