Setting infopath drop down list boxes to equal different fields from one selected item

Hi all, not sure if this is possible, but I require the following:

I have two drop down list boxes that are conntected to the same SharePoint list called 'Approvers.' In the approvers list there are two columns: Name [people field] and E-mail [text] The data connection called Approvers is linked to these two fields

What I require is that when a name is selected in the first drop down list, populated from the Name column, the corosponding email address for the name is shown in the second drop down list. I have a broswer enabled form so filtering is not allowed