How do I burn a DVD with windows VISTA?

i have windows vista, and a DVD burner…but WHERE IS THE SOFTWARE to burn!!!! windows media player doesnt allow it, and the ONLY other thing i see is “Windows DVD maker” and EVERY file i try to burn is “corrupt” or “not valid” WTF? the files work!! HOW DO I JUST BURN A VIDEO DVD?!?!?! why is this so hard? I see ONE other program that only lets me burn a “data DVD” i dont understand. where do i make a normal DVD? lol