If it is like the groups we go out with, make sure you have a couple of good "Man" discussion starters ("How about that game last night..."). I have found that the Women will tend to cluster and talk (even if separated around the table), leaving the men to smile and nod. Someone then has to start up the parallel conversation between the men - and there's your chance to shine.
Me 42, W 39, S8, S6, S2 M 11y, A & ILYBNILWY 11/08 Walking away from a bad situation.