At work a colleague of mine was looking to modify printer permissions on a Server 2008 R2 terminal server using PowerShell. And to be honest, it was more difficult to do than I had expected.

So naturally, I started looking if someone had already created a script for this same purpose and eventually I found this great script created by Vadims Podans:
PrinterUtils.ps1 / Functions for advanced printer management

By leveraging this script, permissions were easily modified by adding the following lines:
$name = “Printername”
Get-Printer “localhost” $name | Add-PrinterPermission “corp\Domain Users” 0 “print”
Get-Printer “localhost” $name | Remove-PrinterPermission “everyone”
Get-Printer “localhost” $name

My modified script can be found here: http://bjornhouben-web.sharepoint.com/Lists/Scripts/DispForm.aspx?ID=22

Be sure to check Vadims Podans website for other great resources: http://en-us.sysadmins.lv/