Labels not displayed for new fields

I have added 2 new fields to the membership request form and everything is good. The text boxes appear as they should. But i cannot get the labels to appear for the new fields. Any ideas what i could be missing?
For the existing fields, the labels are set in the code to the values specified in the web part properties (and default to the values in the resource file). I'd try hard coding the labels in the template first, to make sure they appear, and then investigate from there (or just leave them hard coded if they are never going to change).
Thanks for the help. I was not setting the text in AddCreateUserControl(). Everything is displayed now.