Copying an existing policy to a new container so it can be edited

Sure, help is on the way. What you will need to do is use the capabilities of the Group Policy Management Console...

(GPMC). You can download this free from Microsoft at www.Microsoft.com. Once installed, you will be able to see all of your GPOs. Pick the one that you want to "copy" and back it up from the right-click menu of the GPO. Then, create a new GPO. On this GPO, right-click on it and select Import. You will want to point to the backed up GPO that included all of your settings that you wanted copied. Now, you should have two different GPOs with the exact same settings, just not with the same name. (Just a note, no links, WMI filters, or IPSec filters are backed up or restored).