Microsoft DirectX® 9.0 for home users will update your current version of DirectX - the core Windows technology that drives high-speed multimedia and games on the PC.

From: https://www.microsoft.com/windows/di...aq/default.htm

I'm assuming that 9.0b is nothing more than a few tweaks to run make DirectX run better and to fix any security issues... just like -DaRK-RaiDeR- said...

jag291