GW Client 12 spell checker

Hi
When replying to an email, the spell checker starts by checking the spelling in the reply message that you type, and then goes on to check the spelling of the original message that you are replying to. This part is not your message and in many cases one does not want to change the original message in any way. Is there a way to limit the spell checking to just your reply part of the message?
Thanks for your help.
Rod Fraser