This is the first complaint from those just diving into this area. NTSC or PAL is all of 480 lines or less and the first scream is not unlike your post.
The P3-500 is a little on the low end for analog capture which would stress most to tweak it to work. I'll just say it shouldn't work for most and be choppy.
I currently have a Pentium 3 - 500 MHz with an ATI All In Wonder (32mb ?). The capture from the TV cable is choppy at high resolution (I'm pretty sure it's from the capture, not the playback).
I am upgrading to a Dell computer 3.0 GHz and am wondering if the new All In Wonder cards are the way to go. A quick search of this forum suggests using an external capture device with USB 2.0.
Should I just get a cheap video card with the Dell and get an external capture device, or should I upgrade the Dell card? Will an external capture device have a TV tuner or would I have to buy a seperate card for that? Will this allow me to capture from VHS and TV without the choppiness I have now? Sorry for all the questions, any help is greatly appreciated.