InfoPath Dev

Update - I was able to get the drop down's working and it successfully queries the hours of a single line.  Now where I'm having the problem is when I try to put the query into a repeating table. Current: System | N/C | Type = Hours <<Query Button>> Desired outcome is to have one query button on multiple lines in a ...

The problem I'm running into is that InfoPath expects the text box I want to store the value in to be associated with the database "Hours" field.  Using the templated Database form, I can't store the value in a text box for each repeating line.  Does that make sense?  

I have a question on whether or not I am doing something correctly or using best practice.  I have an estimate form that I am trying to convert from MS Excel to MS Infopath with a database table backend.  I'd like to store the estimate hour values in a MS Access database, but have an infopath form for the end user to ...