I have an Intel (R) Pentium (R) 4 CPU 2.40GHz, what is the best graphic card to use acivate my Aero Graphics?

My computer has a low profile slot, and is AGP DDR as far as I know. I know ineed at least 128mbs, and I would like it compatible to Windows & Aero; DirectX 11, 3D, etc A little reurance on the next purchase of a graphic card please.