WebFarmSnapin for IIS 7.5?

Hello,

I wanna know if there is WebFarmSnapin for IIS 7.5.

When I try do add the snapin here, the following error occurs:

PS C:\Windows\system32> Add-PSSnapin WebFarmSnapin
Add-PSSnapin : No snap-ins have been registered for Windows PowerShell version 2.
At line:1 char:13
+ Add-PSSnapin <<<< WebFarmSnapin
       + CategoryInfo : InvalidArgument: (WebFarmSnapin:String) [Add-PSSnapin], PSArgumentException
       + FullyQualifiedErrorId : AddPSSnapInRead,Microsoft.PowerShell.Commands.AddPSSnapinCommand

Help me, please!!!