Use the .ascx control  in a custom  web part.

First, copy the .ascx file  to “12
Hive”\template\controltemplates\.

In your web part project create a new class. Here's
SOME sample code so your web part can reference the
.ascx control:


public class SOVR :
System.Web.UI.WebControls.WebParts.WebPart
{
// Member variables
protected DTCControls2007.SOVR UserSOVR;

protected string UserControlPath =
@"/_controltemplates/";
protected string UserControlFileName =
@"SOVR.ascx";


protected override void CreateChildControls()
{
UserSOVR =
(DTCControls2007.SOVR)this.Page.LoadControl(UserControlPath
+ UserControlFileName);
this.Controls.Add(UserSOVR);
// Get the data for the grid.
string strOrg =
ConfigurationManager.AppSettings["Organization"].ToString();
UserSOVR.Organization = strOrg;
UserSOVR.RetrieveByOrgName();
}

protected override void
RenderContents(HtmlTextWriter writer)
{
this.EnsureChildControls();
UserSOVR.RenderControl(writer);
}