Hi and welcome d3a7hr0w,
Firstly, you will have to uninstall R:TW. You can do this by entering Control Panel and then selecting "Add Remove Programs" on Windows XP, ME or 98 or "Uninstall a Program" on Windows Vista.
Scroll down the list until you locate an entry named "Rome: Total War". Select it, right click, and order it to unistall. Once you have done that, you can easily follow the wizard's instructions while it performs it's magic.
After you have done that, enter either your "C:\Program Files\Activision" folder, if you have a standard version of R:TW, or your "C:\Program Files\The Creative Assembly\" folder if you have Gold. Within the folder, there will be another folder entitled "Rome - Total War". You have to delete it to ensure that the next installation goes smoothly.
Next, you have to re-install R:TW. To do this, enter "My Computer" and select the disk drive which R:TW is in. Then, double click on the file named "setup.exe".
Simply follow the instructions in the installer as you go along until the game is fully re-installed.
After you've done all of that, you may need to patch up depending upon which version of R:TR you want to install. To check, on the main R:TW menu, simply click on options and, on the top of the screen there should be a number (1.x).
If, in the place of x there is a 0 or a 1 (the full number being 1.0 or 1.1), then you need to patch up to 1.2. That patch can be located here. Now you can simply download R:TR 6.2 Gold Edition from here and then install it.
Alternatively you can play R:TR Platinum Edition, which is the later upgrade of R:TR Gold Edition to the newer R:TW Patch. To do this, continuing from the previous instructions, simply patch up to 1.5 and download Platinum Edition (1.8) from here. Double click on the installer and follow the instructions. Afterwards you need to delete the map.rwm file found in "C:/Program Files/Activision/Rome - Total War/data/world/maps/base". Then simply play away.
If in place of the x there is a 2 (1.2) then you can simply play R:TR Gold Edition straight away by downloading it here. If you wish to play Platinum Edtion then you first have to download patch 1.5 from here and then download R:TR Platinum Edition (1.8) from here. Then delete the map.rwm file found in "C:/Program Files/Activision/Rome - Total War/data/world/maps/base" and play away!
If in place of the x there is a 3 (1.3) then you, unfortunately, cannot play R:TR Gold Edition without un-installing your copy of R:TW, re-installing it and following the instructions for version 1.0 again. If you have Barbarian Invasion then I'm sorry to say that even that is not possible unless you install R:TW without BI. Sorry about that. However, you can play R:TR Platinum Edition by downloading patch 1.5 here and then downloading R:TR Platinum Edition (1.8) from here. Then delete the map.rwm file found in "C:/Program Files/Activision/Rome - Total War/data/world/maps/base" and play away!
If in the place of the x there is a 5 (1.5) and you do not have Gold Edition, then, without reinstalling R:TW, alone, without BI, you cannot play R:TR Gold Edition. Sorry. However you can still play R:TR Platinum Edition (1.8). First download the great modification from here and install it. Then delete the map.rwm file found in "C:\Program Files\Activision\Rome - Total War\data\world\maps\base" and play away!
If you have Gold Edition, (1.5) then you cannot play R:TR Gold Edition at all. Sorry. However, you still can play R:TR Platinum Edition. First you have to download the modification from here and install it following the instructions. However, do bear in mind that the default file-path is different to that of a standard version of R:TW so, when it asks you where you want to install it, change the default file path to "C:\Program Files\The Creative Assembly\Rome - Total War". Then press next and allow the installer to do it's wonderful magic! Once it is complete, delete the map.rwm file found in "C:\Program Files\The Creative Assembly\Rome - Total War\data\world\maps\base" and then play away!
Hope this helps you, good luck, cheers!
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