>...Lexicon.tgz appears to be empty

This is tar file is autogenerated by a script that runs for all the languages in the VoxForge corpus. 

NSH created an acoustic model using VoxForge data (actually, he gathered most of the speech audio and submitted it to VoxForge) and created an acoustic model for Sphinx - take a look at his Russian pronunciation dictionary.  There may be a more up to date one on the CMU Sphinx web site.

great, thank you very much!