Selecting data by code into a tableadapter

I have generated a quick sample program which works fine:-
Public Class Form1

    Private Sub AdmasBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
        Me.Validate()
        Me.AdmasBindingSource.EndEdit()
        Me.AdmasTableAdapter.Update(Me.PIComtass02DataSet.Admas)

    End Sub


    Private Sub AdmasBindingNavigatorSaveItem_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AdmasBindingNavigatorSaveItem.Click
        Me.Validate()
        Me.AdmasBindingSource.EndEdit()
        Me.AdmasTableAdapter.Update(Me.PIComtass02DataSet.Admas)

    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
.

        Me.PlmasTableAdapter.Fill(Me.PIComtass02DataSet.Plmas)
              Me.AdmasTableAdapter.Fill(Me.PIComtass02DataSet.Admas)

    End Sub
End Class

This brings a complete list in which I can page through. What I need to be able to do is change the input query to select a single record by adding a " WHERE AccountNo = " condition to the select statement in the program.
Any ideas?