A patch has been released for trophy support allowing users to gain 48 trophies that includes a platinum trophy. Gold is so 80's anyways.

Here is a bit from the PS blog:

"One thing everyone should note, as our co-president Evan Wells told Joystiq during E3, is that we weren’t able to award Trophies retroactively through this patch. This was done so that everyone receives their Trophies fairly and can’t take advantage of the game saves we’ve seen floating around. That means you will have to start a brand new game—without any medals or rewards unlocked—and play through Uncharted to get Trophies."