Set Powershell Execution Policy via Batch script?

I finally finished a big Powershell script, learning Powershell all on my own via the Internet, to "build" a Windows 7 PC that has only the operating system and an Administrator account.  My script works great, adding all users, apps, printers, etc that we need.  Except, you have to first login to Powershell and set the Execution Policy to "RemoteSigned" before you can run the Powershell script.

Is it possible to set the Execution Policy via a batch script and then call my Powershell script so that all another user will have to do is double click on one script and watch it run?