Hi,
there are also some not-so-easy-to-find model and scenery resources on the net:
[ul][*] [link=http://www.rokiss.ch/index.html]ROKI's site[/link][*] [link=http://www.kellerjuergen.de/]Jürgen Keller's site (excellent models!!)[/link][*] [link=http://www.docinsane.com/home/]Maarten DeMoor's site (see 'Downloads')[/link]
[/ul]

And not to forget [link=http://www.szenerie-design.de/Seiten/home.htm]Szenerie-Design.de[/link]. It is commercial, but the szeneries are verry affordable.

Cheers,
Lego