I was hoping to figure ask you guys if you know of a specific website, or forum that deals with the selling/trading of computer components. I got two of the same gift for my birthday and I am definitely not needing to have two EVGA 580 GTX's. Thank you for the help and I am willing to sell if for a good deal!
As Aftcomet said usually you need to be known on forums before you can sell. If you have no idea what heatware at best, or beerology is at worst you'll have a hard time selling.
You could offer to ship first. Just make sure you do your homework first. The best forum I know of to sell stuff requires you to have a 50 post count in forums OTHER then their FS/FT forum so even if I told you you couldn't post there.