Nuts. Here was what I was trying to to:
a) My wife plays a lot of video games (right now she's working The Legend of Zelda: The Wind Waker)
b) While she plays games, I'm usually on the computer
c) I'd like to see what she's doing without having to get up and look around the corner every 30 seconds.
d) I have a video line-out on the back of the HDTV she's playing Zelda on (Zelda runs at 480p)
e) My PC monitor has several inputs (RCA, Coaxil, S-Video) for PIP - great for watching TV while using the computer. Would be nice for watching my wife play video games.
f) For some reason (conversion issues most likely, like you guys said) the line-out I get from the HDTV to my PC monitor can only be antenna or VCR sources.
If anyone else knows of a CHEAP solution to this problem (other than getting of my ass evey 30 seconds, hehe
let me know. Thanks!