I decided to concatenate through my SQL statement so I was able to view multiple columns together, as one. Not so much a solution as a workaround, but no one had replied, so I was never sure if there was an easy listbox property change.
Dim Adapter As New OleDbDataAdapter
Dim Command As New OleDbCommand
Dim xFrom As String = dtpFrom.Value.ToString.Substring(0, dtpFrom.Value.ToString.IndexOf(" "))
Dim xTo As String = dtpTo.Value.ToString.Substring(0, dtpTo.Value.ToString.IndexOf(" "))
sqlQuery = MainQuery ...