Well it used to be money. If a man was rich that was pretty much it and a bit for most women but the times they are a changin and women are getting more finanically independant.

So what does a rich women want, a hunk of course and why wouldn't she.

It seems that a study to be published in Evolution and Human Behavior has found a significant shift in what women find desirable in men. The researcher, Fhionna Moore of the University of St Andrews, UK, (not to be confused with the golf course), says

It is this change in comparison to historical constraints that I believe influences mate preferences

read more here.