Thanks for the response. To answer your question..
For example, I have a contact with two cell numbers one for a guy and one for his wife. I want to be able to put some comment so I know which cell is which..
Also, for a business number, I may have several numbers so I want to put a comment for what each one is.
I think I can always put extra characters at the end of the number because when the BB phones, the phone company will ignore anything after 10 digits.
Hope this helps.