Directx9 vs Directx10

[Guest]

I have Vista Home Premium. I recently installed FEAR and Extraction.
Afterwards I found that I could play single but not multiplayer. I also found
that I couldn't play HALO 2 multiplayer either.
I uninstalled FEAR & Extraction yet I still can't play m'player on HALO 2 or
anything else m'player on the internet.
Can someone explain to me what has happened? Better yet, how do I fix this?.
Thanx

 

[dean-dean]

I don't know how your games use DirectX, but they may need optional DirectX
components, which you can find here:

http://www.gamesforwindows.com/en-US/AboutGFW/Pages/DirectX10.aspx

Click on "Download the latest DirectX", and the DirectX End-User Runtime Web
Installer will analyze your installation, and install the components that
need updating, or that you may be missing.

 

[noaim]

are you running ur games as administrator and in compatibility mode?\

 

[Guest]

Yes. I am the administrator. I have never had a problem like this before.

 

[noaim]

no I mean are you right clicking on the exe and clicking run as
administrator some games require this in vista.