Quote fromYou could download Hellfire if walking is too irksome for you- it's not an official Blizzard expansion but is basically regarded as such by the community. Anyway, it allows you to run, and has a spell that reveals the items on the floor. I never used it, but that's what I've read about it. It doesn't change any other core gameplay elements, I don't think, besides adding some quests.
Well, you can run in Hellfire (the true is that you walk fast), but only in the town. Hellfire lets you go to another dungeon, have some new items and enemies, and use the monk... but I really prefer Diablo without this expansion.