If you're willing to use code behind to instantiate controls, you can declare
webcontrols (or the literal - which allows you to manually insert any valid
html) as noted below..

On the .aspx page:
<asp:PlaceHolder id="PlaceHolder1" runat="server"></asp:PlaceHolder>

In the code-behind page:

protected System.Web.UI.WebControls.PlaceHolder PlaceHolder1;
   
private void Page_Load(object sender, System.EventArgs e)
{
for(int i=0; i<6; i++)
{
HyperLink hlnk = new HyperLink();
hlnk.NavigateUrl = "http://www.msn.com";
hlnk.Text = "msn" + i;
LiteralControl ltrBR = new LiteralControl("<hr>");
PlaceHolder1.Controls.Add(hlnk);
PlaceHolder1.Controls.Add(ltrBR);
}
}