Use PowerShell for Visual Studio Command Prompt

You can use for example this script to import Visual Studio command prompt environment, see the examples in the script documentation comments, e.g. for Visual Studio 2010:

Invoke-Environment '"%VS100COMNTOOLS%\vsvars32.bat"' 

Having done that in the beginning of a PowerShell session (from your profile or manually), you get what you ask for in this PowerShell session.

Or you can use the solution provided by Keith Hill in this answer.

I use this script that I call Initialize-VisualStudio.ps1, i call it in my profile with dot source, to set the environment variables need it, in my actual session:

param([switch]$ArquitectureX86)
if($ArquitectureX86)
{ $arq= "x86"}
else
{ $arq="x64"}
pushd 'c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC'
cmd /c "vcvarsall.bat $arq&set" |
foreach {
  if ($_ -match "=") {
  $v = $_.split("="); set-item -force -path "ENV:\$($v[0])" -value "$($v[1])"; 
}
}
popd

have a look at PowerConsole

PowerConsole has been incorporated into NuGet http://nuget.codeplex.com/. You get PowerShell inside Visual Studio and a package management system.