Come in and take seat over there, I think there must be some red wine and olives left for you
Since I first learned that it was possible to add new vehicles for TTD, I've been dreaming of having a vehicle replacement set based in spanish trains.
So finally I found these forums! since there was already a set running for japanese trains, I first joined the Japan set (link in my signature) and I've been working for it since over one year ago. Some job is yet to be done for the Japan set, but that's mostly slight details we will keep adding with time.
Now that it has been almost finished, I've decided to begin the project I've been dreaming of since some years ago.
For this I am counting on the help of many people: some members, such as krtaylor or Raven; and people from away the forums, as Carlos Perez Arnau.
Everybody is invited to come in and collaborate, we need coders; for the various features we are thinking to include in this set, artists; for the variety of trains, other vehicles, liveries, environment and buildings, and documenters; to bring us information on technical specifications, data, pictures and references.
I do know that many people is at the moment busy with other sets, but I will appreciate any kind of help here

Feel free to take a glance at the very first work: the tracking table. Krtaylor gently offered himself to provide with the hosting and HTML editing for it.
The list is mostly done, but there are still many holes left. We will have it updated as soon as we can.
Gracias! adios!
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Update, Feb. 2, 2006:
The first taster version of the set is released, thanks to Death, our coder.
You can find it in the link in my signature.
It includes some of the 1st generation locomotives, the long distance and regional passenger cars, and the mail coaches. It has to be developed yet, and may have some minor problems, but it works fine

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Spain set taster, latest version found here
Spanish Town Names found here
High-speed tracks found here