According to what I remember about WarCraft II - if your soundcard isn't compatible with one of the ones listed, then you are out of luck, especially under Windows 2000.

Auto Detect jumps to "no sound card" when it doesn't find any compatible devices. You can try to force it, but WarCraft II really wants a SoundBlaster, and will ask you all the appropriate DOS settings. If you have DOS drivers you can try digging them out of your config.sys or autoexec.bat file (can't remember which).

You may just want to dig up an old SoundBlaster and drop it in there. Of course, if the sound on your mobo is really good, this means you'll be rebooting to disable onboard and enable the SB16 every time you want to play WarCraft.

The industry really doesn't give a damn if you still want to play your old games.