Having a hell of a time simply moving the mouse, here's what I got so far:
[code]    [DllImport("user32.dll")]
    public extern static int SendMessage( IntPtr hwnd, uint msg, uint wParam, long lParam);[/code]
[code]User32.SendMessage(this.Handle, (int)WM.MOUSEMOVE, 0, MakeLong ( PixelRect[i,0], PixelRect[i,1] ) );[/code]

WM.MOUSEDOWN = 0x0200 like it should, I can't think of any other things to check.  I've changed the import castings (is that what you'd call it?) many times... not sure what else I can do =\

WM_MOUSEMOVE is the notification windows get when the mouse has moved.  As far as I know, it doesn't actually move the cursor.  What you want is SetCursorPos.

That seems to be working, thanks a ton :)