i'm sorry to have to ask such a stupid question, but i'm constantly messing around with mods and have managed to overwrite my vanilla copy of doomsday, which wouldnt matter except i need it for my aar game, because the mod messes it up. obviously i need to reinstall, but the game being really clever has detected that i have the game so wont let me install it again. i thought i could get round this by just renaming the folders and tricking the disc into thinking i havent got it but it didnt work. sorry but what do i need to do? please help i want to update my aar finally. thanks in advance.