forget about bulking up - if you are a woman you don't have the testosterone needed to bulk up - just go and lift and get strong.

the people you see in the magazines that are "bulky" are working out very hard, long hours, have very little body fat (and may be supplementing their hormones) - in otherwords, they work very long and very hard to get that way. your gym workouts won't make you like that.

here is a site with good info on women and lifting:
Krista's site