I think by "service", zeezee means the Native Windows Services, that you'd find in Windows Vista or later on a tab in the Task Manager, and all versions after and including Windows 2000 by typing "services.msc" into the Run dialog. Try
this site to see if they're any tools you can use. Process explorer, process monitor, or autoruns might help, but I'm not sure as they're very versitile tools, which I've never used 100% of. I don't know what Rosetta Stone's services are, as I do not own it, but this might point you in the right direction. Good luck,
Dave