ok i got two questions in one topic but i think it'll be easy.

1) how do i keep my uvs from rotating? i just have a bunch of grids and i flatten them out, each one to his own uv tile,but when i apply my texture some are 90degrees rotated
2) how do i fill a grid with a texture thats not the same ratio, like expanding the texture? (fill mode like in windows wallpapers)