I have a Dell with WinXP and am using VF2.0. When I do a zoom in on a still picture, any natural lines in the picture (corners of walls, edges of furniture, etc) get an extreme zig zag look, like stair steps, as it's zooming in. Is this normal? I have the very basic low-end video card that Dell provides, because I wasn't expecting to get hooked on this video thing. Would upgrading the video card help? Thanks!