Thanks vbfa, for the advice on the Radeon HD 4350. I purchased the XFX Radeon HD 4350 video card and, ultimately, it is working fine and doing what I want. It is indeed a good solution for what I want.
The downside is only a few hours (actually 5) of frustrations and I'm still not fully cognizant of why I had such, and so many, problems. First off -- can this really be a Windows 7 "feature" -- the CDROM that came with the video card -- refused, and I mean "refused" to run on my Windows 7 machine. It didn't run when I inserted it, it didn't run when I manually clicked on the setup.exe or the autorun.inf, and at least a half dozen other steps I took to force the programs on the CD to run. This should have been a warning to me.
Next when I finally found a cludgy workaround to get the files on the CD to install, the effect of the install was obviously, and hopelessly, incorrect. It dawned on me, of course, to abandon the CD and get the ATI install package from the Web site for my card. I ran that, and it installed fine, and it looked very promising.
Remember, I'm just using non-HD monitors: a VGA computer monitor, and a non-PnP television via S-Video (with a DVD recorder at the far end of the S-Video connector). The ATI
driver package asked the normal questions (I want to use the S-Video-out to extend my desktop), but refused to accept ANYTHING having to do with a second monitor. The "extend" to a second monitor was always, always, ignored. I switched the S-Video-out to be the "primary" monitor, and I indeed saw my desktop on the other end of the S-Video (my TV in another room). But ALL permutations of a "second" monitor were always ignored. This is after all kinds of attempted workarounds (e.g. deleting all
drivers, re-installing, etc. in all kinds of ways). No joy.
I spent a considerable amount of time using the Windows Control Panel approach to extending my desktop, but all efforts were ignored, ultimately, and the desktop was never extended to a second screen (no second screen was ever "found" even using the windows control panel approach).
Ultimately, I perused the ATI Web site for similar problems. There are apparently lots of headaches with video cards not explicitly designed for Windows 7 (although perhaps my, no doubt relatively-rare (and likely old-fashioned) need for S-Video, rather than HD, connection is probably pretty unique among users). And, in reading the efforts of others who have card trouble with Windows 7, I stumbled upon someone who recommended what I had always thought was "obviously wrong". Don't use the Radeon video card for your VGA out. Instead, they recommended as a last resort, go back to the "on-board" VGA out and only use the Radeon card for the "extended" screen out. To do this, they recommended, I must change my BIOS to force the on-board video for the "primary" screen.
Finally, I got some positive reinforcement. Yep, the on-board VGA out worked fine. And, lo and behold, I could FINALLY extend my desktop by using the Radeon video card solely for the "extended" (second) video monitor. I'm using the on-board video for my primary computer monitor. And, I could only accomplish even this, by using the Windows Control Panel approach to extending my desktop -- the ATI software approach refused to acknowledge even this set-up.
So, I am finally OK with a seemingly trivial request -- entend my desktop using a 2-year-old (but not ancient) Radeon XFX video card via S-Video out. Perhaps the odd needs of my particular setup is mostly to blame. Perhaps my choice of a probably non-Windows 7 card is also to blame. Perhaps my own stupidity (OK, mostly my own stupidity) contributed greatly to my woes.
But, I got it working and am now fine with the setup. For $40, I can't complain too much.
Thanks!
-- vertex11