title: How to create a new instance in MSSQL Server using PowerShell, PS+WMI or C#
body: <p>To create extra named instances for a already installed MS-SQL server<br> 
  I usually re-run the installer...<br>
  and choose to add a new instance supplying the new name...</p>
  
  <p>How can I do this from Powershell???<br>
  (I installed the SQLServer module but there is no 'New-Instance' commandlet there...)</p>
  
  <p>Googlin' I saw some solution with Powershell+WMI but couldn't find one for new instance creation...</p>
  
  <p>In last case...<br>
  if this can be done with c# (cs/csx) it is also an option...</p>
  
  <p>?any ideas,,, Thx!</p>