Basically when you launch the PEBuilder.exe, click on the Plugins and enable "Symantec Ghost 8.0".
Here are the help files from C:\Pebuilder\Plugin\Ghost8\Ghost.htm
Ghost32 (version 8.0!) is certified to run on Microsoft Windows Preinstallation Environment (WinPE).
But it also works on BartPE.
Ghost32 is not free, buy it from Symantec.
To activate support for CD or DVD write, you also need to enabled the "ASPI" plugin.Before you can use the plugin you must copy some files to the plugin directory.
Install and activate ghost as described in the ghost installation manual.
Then copy the following files from programs files\symantec\ghost into the plugin\ghost8\files directory:
ghost32.exe, ghostexp.exe, ghostsrv.exe, ghostcdr.dll