NOTE: if you have Rome Total War Gold Edition on a single DVD you will probably get a message like "wrong CD" or something like that when you will start the game. That is becouse the "RomeTW.exe" file that comes with RTRPE is from a CD version of RTW and it is not compatible with your DVD version. What you have to do is copy the original "RomeTW.exe" from the folder where you have saved/backup your game and then overwrite the one from the folder where you have the game(RTW) + RTRPE. You can avoid this from the start by deleting the "RomeTW.exe" file from the RTRPE folder prior to the copying and pasting phase.