I know two of the Easter Eggs in MM6 that don't work with modern computers. In the chapels of the two Silver Helm fortresses, one of the pews in the Outpost (in Mist) used to give a top-level spellbook (I can't rememver exactly what it was), and one of the pews in the Stronghold (in Silver Cove) gave a top-level spear with a medium enchantment. But I haven't seen a game in years that has provided those.Another flaw with playing MM6 on the modern computers is that if you click on one of the peasants, it won't always tell you what his/her NPC role is.