CheckedBoxList check based on DB value

[Gibster]

I'm currently using a CheckedBoxlist which is bound to a database
datasource using SqlDataReader, so far so good, the lists are
displaying correctly.

However I cannot figure how - or even if? - you can also dynamically
check the "checked" staus of the items in the list based on a bit
column in the datasource. Am i going the wrong way about this, is there
something else I could use? (aside from this I'm a little bit unhappy
about the fact that the checkedboxlist control renders in an
unnecessary table, so an alternative way of doing this that doesn't
invlove tables would be welcomed)
Codebehind
private void getListContent()
{
string sp="sp_selectListContents";
string ConnStr =(connectionInfo);
SqlConnection mySqlCon = new SqlConnection(ConnStr);
mySqlCon.Open();
SqlCommand MySqlCmd = new SqlCommand(sp,mySqlCon);
MySqlCmd.CommandType = CommandType.StoredProcedure;
SqlParameter MySqlParam1 = new SqlParameter("@listid",
SqlDbType.VarChar);
MySqlParam1.Value = Request.QueryString["id"];
MySqlCmd.Parameters.Add(MySqlParam1);
SqlDataReader mySqlRead = MySqlCmd.ExecuteReader();
CheckBoxList1.DataSource = mySqlRead;
CheckBoxList1.DataBind();
mySqlCon.Close();
}

aspx page
<asp:checkboxlist id="CheckBoxList1" runat="server"
DataTextField="details" RepeatColumns="1"></asp:checkboxlist>

Thanks for any help
Charlie.