How to add columns (fields) to a sharepoint list that is published in Infopath

Hello,

I created a list form in SharePoint 2010.  I then selected customize form and it opened in InfoPath.  I published the form so I could format the text.  I now need to add fields (list columns) to the form.  How can you add  and order fields to a published list form?  I can add fields in SharePoint direct, but need to get them into the published form.

Thanks for the help!

S