InfoPath Dev

Thanks for the suggestion, but as I say I am a real newbie.  How do you set the filter?

Hi, please forgive me for my igronance but I am new to Infopath.  I am creating a change request for in infopath and would like to have a dropdown box which gets a list of names from a list in sharepoint.  What i would like to achieve is when a user selects a name it will populate two text boxes with phone number and company name ...