I'm fairly new to guild wars and mostly have been playing the random arenas. I play a W/N wich will be a hammer build once I get my skills. Problem I'm having is many of the builds I'm running into are using stances or something where I cannot hit them at all. They basically make my weapon totally useless. How do I combat this?
swap targets. If it's a warrior with stances he's no threat to your team and you can safely ignore him and kill everything else before starting to whittle away on him.
If you want to play wild blow, it's far better on a dervish.