This will identify your perk when you want something to use it. Type in an ID with no spaces in the 'ID' heading.Right-click above the vanilla challenges and select 'New.' This will open a dialogue box named 'Perk.'.Use the Object Window to open 'Actor Data,' and then open 'Perk.' You should now see all of the vanilla perks.This will either be Fallout3.esm or FalloutNV.esm. Bring up the Geck and make sure that the correct master file is selected.To demonstrate how to make a custom perk for Fallout 3 or Fallout: New Vegas.