Much more info will be needed. The make and model of the bow will help, but most importantly, what is your draw length? What type of arrows do you want to shoot (wood, aluminum, or carbon)? And how heavy of a broadhead do you want to shoot?
Also, if you are new to traditional archery, are you sure that your current arrows are completely wrong, or could they still be tuned to your set up? What spine are they, and how long are they? And what sort of flight characteristics are they showing?
Sorry for the long answer, but it's really just not that simple. Especially if you intend to shoot broadheads.
BTW, welcome to the gang! Buckle up, and enjoy this wild ride that we call traditional bowhunting. If you're like most of us here, you're probably already addicted. It only takes one beautiful arch of that feathered shaft to start it.