[development] re-arranging mutlivalue fields

Hi, I have two CCK multivalue fields (a nodereference field and a textfield), both with a set amount of maximum values. My goal is to build a form that lists these fields as 'nodereference + textfield' groups, in order to simplify user input. This doesn't seem to be so easy to do with form_alter(), since a multivalue field is an array of its own, so re-ordering the fields seems tricky. Does anyone have ideas on how to approach this? thanks, - bruno