Create a new field that will convert the numeric field into a string:

NewFieldName: Cstr(NumericFieldname)

You can now create a relationship between NewFieldName and your text field.

There’s alot I like about Access 2007 but one big exception is Microsoft’s failing to provide a trail map from Access 2003 features to the radically new locations of those same features in Access 2007. 

So I spent a few hours trying to figure out how to separate a label from a field in a report layout.  In the past you could just simply select the label and then cut . . . no more.  Now what you have to do is select the Arrange Tab and work with the buttons for Tabular, Stacked and Remove layouts. The layout needs to be removed by pressing the Remove button in order for the label to be deleted. (Now how hard would it have been to state this in MS’s own Help file??? Methinks it did belong there.)

On the plus side the tabular and stacked layouts allow for a much improved ability to resize and relocate fields on a report and working with the field/label links in most layouts will be a time saving improvement.  If you don’t for some reason want your field labels, don’t despair – you can still delete them – just the way to get there has changed.