Still a bit confused. Does my computer has to be able to accept 2 copies of D2 at the same time in order for this to work? Also I cannot really find the folder for first installation. Is it ok to change folder name via right click then "Properties?" I am afraid things might get messed up if I change folder name that way. Also if I have a character in a game using first disc, do i have to take out first disc, insert 2nd disc and switch computer user account to get second character in the same game since my computer can only accept one disc at a time?