web player poor non enhanched video quality

Hi, since Vista I have had the problem, that videos played in VLC, Zatoo, Divx Player and so on looked totally ugly because they werent enhanced and scaled by software it seames. Only MPC Home Cinema smoothes videos correctly. Since this is not a DivX Web Player exclusive problem, I started searching for the problem in the rendering. I could fix the problem in VLC and DivX Player by switching to OpenGL rather DX rendering. But in the Web Player Preferences there are no such options.

So, is there a simple solution to this or is it a problem that have to be fixed by Microsoft?

I recenty installed the DivX Tech Preview .mkv support for Win7.

I am usig:
DivX Web Player 1.5.0.52
Windows 7 RC Build 7100
Radeon 3870
AMD 64 X2 5600+
4GB RAM
ASUS M3A78-EH Motherboard