By far the best thing that ever happened to AC. It is the underlying plugin that almost all other plugins use. It's a MUST!!!!
Download, Extract and Run as administrator.
You'll get this archaic screen. If you remeber what this is well damn your old and will fit right in.
It may even give you this. Go ahead and let it try.
Well now your done.
If you get this message...
Go back to step 3 and install the DirectX drivers.