Importing WindowsPE 2005 is the same as importing any other OS.
Import Operating System Source Files
Download Windows PE 2005 from Licensing.Microsoft.com. Save the file to C:\PE

Extract the contents to C:\PE and then delete the "SW CD SA WinPE 2005 W32 English . MLF.exe" file .

Import WindowsPE 2005 into the Workbench. This shows WindowsPE 2005 imported into the workbench
Create a Temporary Image Capture CD