I made a video of my son on xmas with my digi cam. i had the camera turned sideways. when i play the vid on my computer it is still sideways. is there a way to rotate it? i did some messin on CS3, rotated it, but it would not play it was just a still after the rotation.

when i take still photos w/ the camera sideways, the are automatically rotated when i open them on my computer.

not sure what i am doing wrong

camera: Canon A640
OS: Vista