i got the greatest hits version about a week ago or so, and i started it up and played the first few chapters and realized there were no trophies although the case said trophies on the back.  i connected my ps3 to the internet and downloaded the patch and synced (not sure if thats a word) my trophies.   however, the medals i earned previous to  update did not register as trophies nor do any medals i receive after the update register as trophies.  do i have to restart to get the trophies or is there some other way?

Wow thats weird. It never happened to me...hmm i guess u should just restart since your only a few chapters in.

No I'm afraid you'll have to start again.

"Unfortunately for us who have already beaten the game once and back again, the trophies will not be retroactive.

IGN: Will any of them be able to be awarded retroactively?

Arne Meyer: That would have been nice, but it wasn't something we would be able to do. We originally left our save games unlocked and portable so gamers could move them off the hard drive and their existing game elsewhere or show off some of the unlocked content at a friend's house. This type of portability would have allowed gamers to get Trophies unfairly and we couldn't let that happen. To receive Trophies in Uncharted you will have to start a brand new save game without any medals or rewards unlocked."

Yeah,as Boutros said.You have to start from 0 to get the trophies you havent unlocked yet,but should have