Create a textBox and in the AfterUpdate event put this
Private Sub TextBoxName_AfterUpdate()
Dim rs As Object
Set rs = Me.Recordset.Clone
rs.FindFirst "[ID_Field] = " & Str(Nz(Me![TextBoxName], 0))
If Not rs.EOF Then Me.Bookmark = rs.Bookmark
End Sub
Change TextBoxName to what it is
Change ID_Field to what it is