[c#] Lanciare comando in background

[Leizar]

Ho necessità di aprire tramite plink una connessione ssh ad un server. Questo deve avvenire in maniera trasparente all'utente, quindi non deve apparire nessuna finestra di alcun tipo (ne input ne di semplice visualizzazione).

Ho provato ad eseguire il tutto tramite process, ma dopo il login mi spunta il prompt (se ometto l'opzione -N) oppure una fiestra Dos che riporta "Using username <tizio>".

Questo è il codice che uso:

Process Plink = new Process();
Plink.StartInfo.FileName = "plink.exe";
Plink.StartInfo.Arguments = "-ssh -N -batch -C -P 22 -l Username -pw Password -L 3306:127.0.0.1:3306 192.168.1.90";

E questi i parametri di plink

PuTTY Link: command-line connection utility
Release 0.60
Usage: plink [options] [user@]host [command]
       ("host" can also be a PuTTY saved session name)
Options:
  -V        print version information and exit
  -pgpfp    print PGP key fingerprints and exit
  -v        show verbose messages
  -load sessname  Load settings from saved session
  -ssh -telnet -rlogin -raw
            force use of a particular protocol
  -P port   connect to specified port
  -l user   connect with specified username
  -batch    disable all interactive prompts
The following options only apply to SSH connections:
  -pw passw login with specified password
  -D[listen-IP:]listen-port
            Dynamic SOCKS-based port forwarding
  -L[listen-IP:]listen-port:host:port
            Forward local port to remote address
  -R[listen-IP:]listen-port:host:port
            Forward remote port to local address
  -X -x     enable / disable X11 forwarding
  -A -a     enable / disable agent forwarding
  -t -T     enable / disable pty allocation
  -1 -2     force use of particular protocol version
  -4 -6     force use of IPv4 or IPv6
  -C        enable compression
  -i key    private key file for authentication
  -noagent  disable use of Pageant
  -agent    enable use of Pageant
  -m file   read remote command(s) from file
  -s        remote command is an SSH subsystem (SSH-2 only)
  -N        don't start a shell/command (SSH-2 only)
  -nc host:port
            open tunnel in place of session (SSH-2 only)

Qualche suggerimento?