If that's how you want it, I'm going to suggest that you make some changes to your dialog, for example, instead of using an edit box for the nicknames, use an editable drop-down list. That way all of the names can be stored in the drop-down list and it will still be editable for the purposes of changing, adding or deleting nicks.
I should be able to have a start for you before I go to bed tonight, or a complete version (with explanations) in 2 - 4 days.
