Add-PsSnapin WebAdministration in Windows7

Here is the function I have in my profile.ps1 for loading the WebAdmin module. It covers IIS 7 and 7.5

# Web administration is loaded as a module on Windows 2008 R2 but as a set of snapins# for Windows 2008 (not R2)function Util-Load-Web-Administration{    $ModuleName = "WebAdministration"    $ModuleLoaded = $false    $LoadAsSnapin = $false    if ($PSVersionTable.PSVersion.Major -ge 2)    {        if ((Get-Module -ListAvailable | ForEach-Object {$_.Name}) -contains $ModuleName)        {            Import-Module $ModuleName            if ((Get-Module | ForEach-Object {$_.Name}) -contains $ModuleName)                { $ModuleLoaded = $true } else { $LoadAsSnapin = $true }        }        elseif ((Get-Module | ForEach-Object {$_.Name}) -contains $ModuleName)            { $ModuleLoaded = $true } else { $LoadAsSnapin = $true }    }    else    { $LoadAsSnapin = $true }    if ($LoadAsSnapin)    {        try        {            if ((Get-PSSnapin -Registered | ForEach-Object {$_.Name}) -contains $ModuleName)            {                if ((Get-PSSnapin -Name $ModuleName -ErrorAction SilentlyContinue) -eq $null)                     { Add-PSSnapin $ModuleName }                if ((Get-PSSnapin | ForEach-Object {$_.Name}) -contains $ModuleName)                    { $ModuleLoaded = $true }            }            elseif ((Get-PSSnapin | ForEach-Object {$_.Name}) -contains $ModuleName)                { $ModuleLoaded = $true }        }        catch        {            Write-Error "`t`t$($MyInvocation.InvocationName): $_"            Exit        }    }}