Not getting all the hate about not investing your money or needing a financial advisor.
Give me $10 million (after all taxes have been taken out) and I won't invest any and will still be living good when I die.
If you're married and win millions, in just one bank you can insure up to $1,500,000 insured (single accounts for husband/wife, joint account which will insure up to $250,000 for each for a combined $500,000 and then two revocable trust account for both the husband and the wife). Divide your winnings up among several different banks and that's a lot of insured money that you'd have even if the bank went under. Last I saw the current $250,000 is guaranteed until 2013 but would't be surprised if that changes again or becomes permanent.
Or you can always get a custom built bank vault in your home where you keep all the money so you never have to worry about keeping it in banks.
Not investing doesn't mean you'll run out of money in a few years, just don't spend millions per year, or even hundreds of thousands. Make a budget of how much you can spend a year for x amount of years, but still try to stay well under that. I don't plan on investing if I won and I've never looked back on that idea and seen it as a bad move. If you're not good with money to begin with, then yea getting a financial advisor to help you out may be a good idea, but it's not like not having one will make you broke. If you're good with money, don't go throw all logic out the window just because you now have millions.