RE: g2 and dir.x9.0 prob.
You don't need to uninstall DX 9. Find the webpage for your video card manufacturer and download and install an updated driver for the video card that will support DX 9. Do the same for your soundcard. Be sure and download the driver that is compatible with whatever version of Win 98 you are running.
PS: Upgrade your operating system to Win XP when you can. Much more stabile system and easier to update.
Hope this helps.