1) Do NOT double post, edit your first post if you wanna add/ask more
2) registering the DLL is done by going to
START > RUN and there type:
regsvr32 "c:\path_to_your_plugin_directory\openconvo.dll" (note the quotes!!!)
3) There are no commands.
4) It is possible that openconvo doesn't work for you though...
5) A new version (with installer) is being made and tested as we speak, be patienced, it will be released soon...
EDIT: new one has arrived....