You can open any ps1 file, copy it all and paste it directly into a script task. Of course you would choose PowerShell in your script task drop down. The execution policy is something seperate that your and organization need to decide on. Symantec offers you the ability to create a job, which can include the ability to set the execution policy to unrestricted, execute your script, and then set the execution policy back to restricted. Is this a bad idea? Most would probably say so. What you should be doing is creating a GPO for your organization that will set the execution policies on your endpoints to all signed. You will then need to sign your scripts, which will be incorporated into your ps1 file. You then have to open them, copy the contents, and paste them into a script task, with PowerShell as your choice.