Anim8or Community

i have a valley, little indean playing a flute,  trees, fish jumping, the sun travels across the sky making morning till night. i made a lite blue  fog that makes the mountains look far away and misty. problem is when the sun gose down the sky should go black and stary but its misty blue.  any tips on how to over come this?

recentley i deciced to finish an old project (i have dozens of half done projects) ive gotten a new comp. since i last opened this one. its a series of avi's i will eventualy stick together. problem is the new renders arent as good as the old ones, theyer more squary like. (technical term) id post a pic but i dont know how. my new computer is a better one so i figured they should atomaticly be better. where do you go to adjust the quality