Use this procedure to download the current version of the design package if you wish to make changes to the files within package, using an external html editor program.
From the System Menu, open the Site Design manager.
Click the Manage Templates button.
From the Site drop-down, select the site whose design you want to change.
In the Download column, click on the Version of the design package to download. Generally you will be downloading the most recent version (the one with the highest number) when making changes to your design.
Click Save on the File Download dialog and select the location to save the file to. You can save the package in any location, using any name you like.
Refer to the ACTIVE Content Manager Design Guide for information on updating your design package.