WHILE us ordinary people buy each other flowers as a means of affection, soccer God David Beckham has treated and wifey Victoria Beckham to a vineyard.   A source tells the Sun, "The Beckhams became vine buffs when he played in Spain. The vineyard went down a storm with Victoria. She was delighted." Apparently Becks paid a seven-figure sum for the California vineyard as a belated birthday present for Posh. Ah, the lifestyles of the rich and famous. - HS