What you need to do is install the client as a service. Using windows 'run' command type
"c:\program files\distributed.net\dnetc.exe" -install
Thereafter, the client will start up invisibly when Windows starts.
Since the client will be completely hidden from view, these other 2 commands will be of help.
"c:\program files\distributed.net\dnetc.exe" -shutdown This will stop the client.
"c:\program files\distributed.net\dnetc.exe" -svcstart This will start the hidden client after you have manually stopped it during a Windows session.
And finally "c:\program files\distributed.net\dnetc.exe" -help will explain other command options, there are a lot of them.

Good luck.
viz