Positioning Dynamic controls - How?

HI all,
The follow code will create a checkbox through code and place the control on the page:
               chkDynamic = new CheckBox();
                chkDynamic.ID = "chkExample";
                chkDynamic.Text = "Check / Uncheck";
                chkDynamic.AutoPostBack = true;
                chkDynamic.CheckedChanged += new EventHandler
                                   (chkDynamic_Check ...