Football fans all over the Island are getting psyched up for the showdown between the Giants and the Patriots this Super Bowl Sunday. At Village Hero in Syosset, the staff is getting ready to tackle more than 100 hero orders. In East Rockaway, workers at Jeanie's Bakery are squeezing blue and red icing all over cookies, cakes and cupcakes. Sports stores in Nassau and Suffolk are selling loads of G-men merchandise as well.