Hershey Co.'s Reese's is tapping into the popularity of poker in a sweepstakes.One grand-prize winner receives a trip for two to Las Vegas and a free seat in the 2008 World Series of Poker Tournament, which costs $10,000 to enter. Three first-prize winners get a trip to Las Vegas and tickets to watch the Tournament. Entry is on the brand's web site or via entry forms distributed on dedicated shippers. The sweeps runs through May 31.