NSSM - the Non-Sucking Service Manager
Known bugs
Version 2.10: Compilation may fail under Visual Studio 2010. To work around, load nssm.vcproj and skip conversion to the new format. Save nssm.sln when prompted.
Troubleshooting
nssm logs its activity to the system Event Log (under Application) so if you're having trouble with it, look in there for clues as to what's wrong!