I would agree with some of the previous posts averagejoe!
Be a good listener, don't monopolise conversations, have something to talk about yourself (dont be one of those blokes who's world doesnt extend past Playstation), make an effort, be original, don't come accross as desperate, don't go talk about exes on the first date, relax, don't tell a load of porkies and don't put yourself down. Don't be a player, don't make someone feel cheap, return calls and don't play games and the rest will sort itself out...
And don't forget manners...like the opening doors kind!
Not much really!!!!!!!