Wayne, probably not a good idea to install PinguyOS in machines with little memory or old graphic cards. It's a bit more graphic intensive then regular Ubuntu.
It may work on Pentium 4's, but below that, this is not the distro for it. This is not backed by experience or data, it's just my impression. Also I tried regular Ubuntu on that kind of machines, and had horrible experiences.

Right now I have it working on my daughters laptop, ACER 5630EZ, that is 1 year old, and uses Intel video and audio, with Ubuntu, was full of problems, with either audio and video, but, works flawlessly with PinguyOS. My 15 years old daughter is loving it.
So... There's something different about it... not sure what, but, now it works.