http://members.uktrainsim.com/filelib-info.php?form_fileid=15829 (66MB). I have not tried this version yet but if it is anything like the version Doug (it's creator) let me play on his laptop at the Aldershot show then it is great.
Screenshots at http://robertsmsts.fotopic.net/c1171561.html
Official real-life tramway museum site at http://www.tramway.co.uk
Screenshots at http://robertsmsts.fotopic.net/c1171561.html
Official real-life tramway museum site at http://www.tramway.co.uk