Some high end laptops come with a video or ZV port (NTSC/PAL). Since I don't have a laptop with a ZV or video port yet, I can provide only some URLs http://www.thp.uni-koeln.de/~rjkm/linux/bttv.html (driver) http://www.mathematik.uni-kl.de/~wenk/xwintv.html (tvviewer). For further information see video4linux at http://roadrunner.swansea.uk.linux.org/v4l.shtml. To collect information about laptops with video port I have setup a page at http://home.snafu.de/wehe/ . Alternatively to the ZV port you might use the USB port.