You have a shot to become a millionaire tonight. The Mega Millions jackpot is up to $735-million with a cash option at more than 356-million bucks. If you miss out, tomorrow night's Powerball jackpot is also getting up there, with an estimated $559-million up for grabs. Experts say if you do win, check state laws to make sure you can remain anonymous, then plan on talking to advisors on how to handle the windfall.