@wittman: Oké, köszi! :) DirectX kérdésben ezt találtam:
A-10C Warthog is a DirectX 9 game, so before starting the installation, go download and install the Microsoft DirectX 9.0c Redist package for June 2010. Yes, it installs just fine on Windows XP, Vista, and Windows 7, 32-bit or 64-bit. Yes, DirectX 11 is supposed to be backwards-compatibile with DirectX 9 but, from personal experience, no DX9 = no sound, and the Warthog's engines and cannon are marvels to be heard.