That did the trick, Seabody. Thank you! As you suggested, I went back to BellaCho's first reply in this thread (Reply #1 on page 1) and followed the link she placed. After following the instructions, I fired up the game to test that things worked and they did!
Of course, now it's late, so I won't actually play, but it's nice to know it's set and ready. Tomorrow's projects: install and patch EPs, then learn how to play with all the new stuff! With any luck, things will go as smoothly as tonight's adventure!