Deus Ex DLC Problem

[JL1120]

Hey, I hope its ok to post this here, the Deus Ex board has been inactive for a while it seems. I have the standard version of Deus Ex: Human Revolution, and I'm trying to do the Missing Link DLC. I've downloaded the DLC and the patch. The few boards I could find say that in the main menu, there should be an option for Downloadable Content, but I don't have that as an option. Has anyone else encountered this problem? I beat it on an old PS3, so do I have to beat the game again before it'll show up? Sorry if this is the wrong spot to post this. Thanks!