Hello, and welcome to the forums.
My first impression is no, that's not a good deal.
However - what processor is it? If it's an old 2GHz, like a P4, it's definitely a bad deal. If it's recent, such as a Core 2 Duo, it's a little better.
Does it come with a hard drive? DVD drive? Case?
With that graphics card there's no way you'll be able to play modern games - this could be upgraded, but only if the motherboard and power supply can handle some upgrades - what motherboard and power supply does he have?