I fixed the problem along with others within a couple of weeks after my last post. The cause of many glitches started when I plugged a modern power supply into an old motherboard. This might have reset the BIOS.

I fixed Word's start up error messages by reinstalling the software. I never could get Spellcheck to work though.

What I ended up doing was restoring my drivers one at a time. I got my sound back from a patch from Microsoft's website, reinstalled the videocard drivers from the original disk, ran a patch from Microsoft to fix Autoplay, and reinstalled any extra hardware devices (modem, mouse, joysticks, and printer). I might have fixed the sound with a patch from Creative, as well.

I ended up building a new computer from scratch, and Word works fine on it.