How can you tell....
 

How can you tell the difference between a regular PS2 game and a DVD PS2 game??

Easy, on the case it says either "CD" or "DVD"

So what would be the best thing to copy a PS2 DVD ROM disc, if it can be done at all.

To copy a DVD you would need a DVD burner that would cost you several thousands of dollars to buy, blank DVD that are nearly as expensive as an already pressed original and software capable of copying DVDs.

Damn, that sucks, I guess that Sony has us by the balls in this area. Does anyone have a list of the current games that are out saying which ones are DVD and which ones are regular. I just hope that Metal Gear 2 doesn't come in DVD.