Windows Server 2008 R2 - powershell: term 'Get-WebConfiguration' is not recognized as the name of a cmdlet, function, script file, or operable program

I am trying to automate some IIS tasks, and the commands I need to use are not working:

Get-WebConfiguration $pathToSite | select *
set-WebConfigurationproperty $pathToValues -name username -value $taregtUser
set-WebConfigurationproperty $pathToValues -name password -value $taregtPWD

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However when I run the Get-Module -ListAvailable, the WebAdministration show up

PS C:\Program Files\IIS> Get-Module -ListAvailable

ModuleType Name                      ExportedCommands
---------- ----                      ----------------
Manifest   ActiveDirectory           {}
Manifest   ADRMS                     {}
Manifest   AppLocker                 {}
Manifest   BestPractices             {}
Manifest   BitsTransfer              {}
Manifest   PSDiagnostics             {}
Manifest   ServerManager             {}
Manifest   TroubleshootingPack       {}
Manifest   WebAdministration         {}

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Even the basic command:

Get-WebConfiguration

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returns an error:

The term 'Get-WebConfiguration' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:21
+ Get-WebConfiguration <<<<
    + CategoryInfo          : ObjectNotFound: (Get-WebConfiguration:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

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Please help me figure out what I need to do to get this working. I am using powershell as the local administrator.