Thanks efc for the reply. I tried Xvid, and AC3 filter and no luck. I also tried FLV and VLC, also with no luck. Most of my videos DO play with just the regular WMP, but the one video does not play with anything I tried so for. Not a big deal, as someone, maybe even Microsoft will make improvements to the codecs that are included with Win 7, and everything will play.
Thanks again, Mike