I just bought a PS3, and i have a few questions

1) I got pretty far in Metal Gear, and i haven't created an online account. If i create one now, will the save data stay with the offline account, or will it be transferred?

2)I'm plannin on buying some more games, can anyone reccomend any?

I dont get the first question if you make an psn name it doesnt change your save data unless you make a brand new USER.

Second Q- Uncharted,Gta4,COD4,Rock Band

The first question i meant to say- does making an online account create another user? or does it just make the current user onlinestarwars0000

Games I'd reccomend:
Ratchet & Clank Future Tools of Destruction
Heavenly Sword(rent)
Assassin's Creed(rent)
Uncharted
Resistance Fall of Man
GRiD
Burnout Paradise
GTAIV
Battlefield Bad Company