I haven't come across any players in Bangladesh who play PS3 online. I know of a guy @ace_shanny, he buys/rents original games and plays on his PS3. That would make him legal for PS3 online gaming.
As for those of you guys who own modded/jailbroken PS3, I can't suggest any solution but I can tell you that you are missing out on a lot of fun for not playing online. It's whole new world where you really get to test your ability and ...(I am floundering for words here )
Anyways, I would like to know from you PS3 owners: why don't you play PS3 online?