I was not able to successfully install these three Russian mini campaigns for Subcommand SCX which can be found here:
http://www.subguru.com/missions.htm
When I select these campaigns I see no sub pic and upon launching the first missions the loading bar ends in a black screen freeze. I think i followed the install instructions, moved the bin, database, and scen files into the correct destinations and used the sub changer. Other campaigns requiring the sub changer seem to work correctly.