What's a good cheap gaming pc? Anything maybe around 600 and less. And one with a cd drive. :?

For that little money,
you will get only a used one,
and probably not a good one.

If that's what you want to use it for, you could just pick up any PC off the shelf from a BestBuy or other computer store and it will work just fine.

Then in the future, if you want to throw in a better video card you can do so.

Cheap
Gaming
Pick any two words.