Uninstalling DirectX 10 from Vista is impossible to my knowledge. Uninstalling the non-official DirectX 10 from XP is not. To so do, you'll need a computer that has whatever version you want to switch to, an uninstaller for 9.0 called UnDx9.bat, and an XP installation disc. Copy all the DirectX files listed by dxdiag from a computer with an earlier installed. 9.0c is confirmed to work. Override all DirectX files while in safe mode. Run a 9.0 uninstaller that replaces all your DirectX files from the Windows CD. It should replace your files with 8.1. Then replace the 8.1 files with the files copied from the other computer. Find the version number of DirectX for those files and find the registry values that the uninstaller adds to the registry. They should be in dxvfix.ini. Change the value for the version to whatever the version you're adding is. 4.09.0000.0904 is the number for 9.0c. Then run the latest updater for DirectX 9.0c and it should update some files. This should leave you with 9.0c.
C++ is the industry standard for game development. For Windows, you'll likely want to learn DirectX as well. DirectX is not a programming language, it is a 3D API.
The pixelshader levels are built into DirectX. If you have the newest version of DirectX and still can't use PixelShader 1.1, then this means that your video card does not support it, and you will need to upgrade your video card. There is no other way around this.
probably to give good location to drill ( angle120 degrees)
Spur gears give 180 degree drive, and worm gears give 90 degree drive.
Microsoft download site. DirectX is a free download for licensed Microsoft users.
DirectX 10 is the newest standard.
DirectX 8.1 is old and unsupported. You would be better served by upgrading your directX.
There is no need to download DirectX for Vista. it already bundles the latest version of DirectX.
DirectX is not about your operating system but it's about video card you have. Video cards available today support DirectX 11 and as far as you have drivers for such video card your will support DirectX. Make sure that you update DirectX.
DirectX 9.0c is not available for Windows 7; to actually install DirectX 9.0c, you would have to downgrade to Windows XP (any edition). In order to play games which require DirectX 9.0c without downgrading your installation of Windows, you must upgrade to DirectX 10.1 or later. DirectX 10.0 (initially included in Windows 7) did not include support for DirectX 9.0c, a decision that Microsoft ultimately repealed when DirectX 10.1 was released.
do Lego games give you a virus
No, Zune will not give your computer a virus.
No it does not give you a virus yet it gives you a lifetime of ads
no, they won't give you virus
Probably.
No. browser don't tend to give you a virus