If you want to have both version of PTW available at the same time follow this procedure.
1) before installing the
v1.21 patch, make a copy of the existing Civ3PTW directory and rename the new copy to be "Civ3PTW Patch1_14 Copy".
2) inside your Patch1_14 copy folder you will have all the existing PTW content duplicated 100%. To make the copy version take up only the minimal space, then you need clear out all the non-functional extra content that you can leave in place in the fully pacthed version. Pay attention to what you are doing and you will cut away almost all the duplicated stuff:
2a) go to the copied version and in the folder named /Civ3PTW Patch1_14 Copy/Extras/ delete everything and free up 89MB of space
2b) go to the copied version and in the folder named /Civ3PTW Patch1_14 Copy/Scenarios/ delete everything and free up 126MB of space.
(remember that you will still ahve all the copies of this deleted stuff in your primary fully patched folders by the same name.)
3) The next step is not too complex but should not be attempted if you have diffiuclty with file management concepts. If you redirect the file pointers inside the "PediaIcons.txt" file then you will be able to delete the duplicate units and leaderhead graphics from inside the folder of you copies version. 60 MB of duplicate files are in the folders:
/Civ3PTW Patch1_14 Copy/Art/units
/Civ3PTW Patch1_14 Copy/Art/advisors/
/Civ3PTW Patch1_14 Copy/Art/leaderheads/
/Civ3PTW Patch1_14 Copy/Art/civilopedia/
and these files can be bypassed by using the replace command in your simple text editor to change the beginnings of the file pointer lines in the "pediaicons.txt" file so that the read as pointing to "../CIV3PTW/art/blahblahblah" instead of "art/blahblahblah".
4) you can eliminate 184MB of duplicated and wasted file space by bypassing the copies of the Leaderhead animations that reside inside the
/Civ3PTW Patch1_14 Copy/Art/Flics folder
you just need to move these files up a level to reside in the /Civilization III/Art/Flics folder with all the standard civ leaderheads and then delete the bogus duplicated copies the reside down in the PTW/Art/Flics folders in your copy and the original. There will probably never be any patch impact on these images because they are huge and clumsy and would be unlikely to be included in any downloadable patch.
--------------------------------------------------
The reason you want to understand how to keep the old patchs of
alive on your computer is that we can anticipate the current management difficulties with getting the original Patch version out and then distributed fully around the world will probably not go away as long as the existing Infogrames/Atari decision processes remain in place. Infogrames controls the international patch distribution but because of some disjointed decisions that have been made at the localization level each one of the extra versions has to be independently produced in different ways in different countries by people who follow totally different approaches to similar problems.
If you follow the steps outline above you can then engage the prior patched versions directly from their folder icons and freely upgrade your frontline patched version by just repeating the clone and bypass steps if required.