TrainzItalia is a portal with more then one site.
In case you want to download free contents, you need only to register. Please remember that you need to register for goth sites separatelly.
Trainzitalia International
http://denver.trainzitalia.com/forum/index.php
devote to the international (USA and Germany for he moment) contents
TrainzItalia Pro
http://www.trainzitalia.com/vbulletin/index.php
devoted to Italian contents
Both sites have a "special" category of member which give access to the the "payware" sections.
In case you are interested into the International material, please follow this link
http://denver.trainzitalia.com/forum/showthread.php?t=3
to register and become a Gold Member.
This give access to all the material stored on the International Site.
Pleae remember that the money we ask for is to be considered a contribution the the staying online of the site, more the a real payware.