While you can use your computer with the screen, it's not really as good as having a dedicated monitor. Resolution of monitors is higher, I feel give a better human interface than plasmas. Where a PC to plasma really does score is if you doing presentations or playing games (because of the size), but for internet and text processing, probably best to use a monitor.
On topic of pc s-vid out, you'd be 6 million times better off with vga switching IMHO, the hassle factor of TV out is more than any other part of HCPC's. VGA, you press a button and there it is. Quality must be better, there's more data there. Pleased with my RGB to VGA solution, sorry John it's not yours, but I'm sure yours is just as good! It's minimum loss of data from the original signal. S-Video just leaves some out, and no display can put it back.
Keene synchblaster, all the electronics are in the plug, v. neat. Looks good too, only occasional fault is the picture sometimes offsets itself to the right, when you turn on, not during. This is cured by turning the stb off, then back on.
Not always, it happens sometimes whe I change channels, I think when it goes from a 4:3 channel like boomerang to a widescreen channel, but I can't be sure. Anyway, I don't have to get my butt out of the chair to fix it, so it's no big deal. once a week or so is all.