I tried to run PTW from the start programs and it failed. I found my PTW Cd and it failed. It asked for C3C, so I put that in and start and it did not like it. I left it in and went back to start menu and it cameup. At no time did I get a chance to put in a seed.
The PTW editor is not part of C3C, so I cannot use it, but it may have had a seed function.
Edit:
I looked at the INI and it has a world seed, but I see nothing in the manual or the readme, so I say it does nothing. In C3C they added the world seed in the patch 1.20, so I doubt it was implemented in PTW. It was maybe in the code, so INI had a placeholder and well as the editor.
In Conquest you can select Play the last world. This takes you to a page to enter a world seed. The editor lets you enter a seed number as well anf generate a map. So maybe the PTW editor does as well, not sure how well it functions, if at all. I do not recall anyone using it in PTW.