Does anyone know of a website where you can play the 4 player mah jong?

I played this game all the time as a kid with my parents and would love to play online. I found one game but now my computer gets a virus everytime I go there. Yes, I know, most people think it is a solitare game. But it is actually a 4 person game where you want to get 500 points before anyone else and you get to say fun words like Pung and Kong. Thanks for any help you can give me!|||Yahoo games has it.|||have you tried yahoo.com games... its been awhile, but i think they have a 4 person version there