Who holds the record in Major League Baseball for most World Series home runs and RBI's?

SQinfoNUTS, just watched an old episode of deepspace nine where they were having a game of baseball with the vulcans. Most boring and I didn't know what the rules were so couldn't understand it.

Graham Y.N.W.A. JFT, an RBI stands for run batted in. It means that well baseball player hitting the ball may not get home he hit a ball so that someone on base could get home.

what's an RBI?