I don't have the Lord of Destruction expansion! No Median XL: Ultimative has separate characters. Will my classic Lord of Destruction characters work? To go back to classic LoD, swap it back! It is that simple! To install the mod, you need to swap out one file.
Detailed instructions and information about Macs are inside the download. Simply make sure your Diablo 2 Lord of Destruction installation is up to date, then find the file named patch_d2.mpq in your install directory and replace it with the one in the mod download. I would like a step-by-step guide, do you have one?