seek for the signal automatically? You should turn off the one that's not bing use at the time. Just guessing.
This is also one of the reason I rather use an HDTV as a monitor instead of a monitor as a tv. The TV usually have all the switching built-in.
I currently have a 22" LCD Westinghouse screen hooked up to my Dell Laptop via basic VGA cable. Additionally, I have set up a comcast hd cable box to the monitor via HDMI. I would like an easy way to switch between these two components. Currently, I have to pull out one plug to use the other, and frankly I was wondering if there is some sort of computer program or something that I can use to make this easier. I believe the on board video card for my dell is ATI.