Class To Display Records From Access DB - Attaching Tables?

I'm writing an assignment in VB for a class which displays records from an Access database. It goes as follows:
From a "Rooms" table, I get the rooms to be displayed in a combo box along with 3 checkboxes which will tell me if they have a jacuzzi, private access of a fire place. From a different table in the same database I need to display in text boxes the bed size, weekday and weekend prices for booking each room. The text boxes should display the correct information according to what was selected in the combo box, but I can't get that to work! The checkboxes work fine, but the text boxes stay the same.

Here's what I have so far:
Private Sub Rooms_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Try
Dim RoomsData As New RoomsDataTier
Dim RoomsDataSet As New CottagesDataSet
RoomsDataSet = RoomsData.GetRooms
[Code] .....