Hello! FYI, there will be another DirectX release before DX10, called DirectX 9.0L - it's not known yet if it will work in Windows 98SE: http://www.theinquirer.net/?article=26656 http://en.wikipedia.org/wiki/DirectX#Release_history Regarding 9x vs. XP - the main problem in 9x are limited system resources: http://www.apptools.com/rants/resources.php Cheers, Roman