Define it like this:
Right ( FullURLfield ; Length ( FullURLfield ) - 7 )
You could also use:
Middle ( FullURLField ; 8 ; 9999 )
Either method discards the first 7 characters: http:// from the full URL field.
Thanks so much for the help. The calculation works great.
Yep, just keep in mind that it's case sensitive where the other alternatives are not.