I just thought I'd mention that my Euro Track Pack is available here - http://trainz.luvr.net/projects-view.php?pid=166.
What is it? Well it's an attempt to bring some British and European visual touches to Trainz' infrastructure.

Phase I is a utility that creates two sets of double-tracked plain line, bridges and tunnels conforming to UK (3.5m) and European (4.0m) track spacing. (The UK is actually 3.416m or 11'2.5" but I made it 3.5m to cater for other railways with similar spacing. And it's a nice round figure )

Phase II contains a set of old style UK speed boards, a point machine (switch motor) to replace your junction levers, and modified versions of Auran's double and single catenary with a larger distance between the masts.

This is an ongoing project so expect to see more objects added as time goes by. Have fun, and let's see some cool UK layouts.

Cheers,
David.