'in the aspx file:
 

 <TABLE id="Table1" cellSpacing="1" cellPadding="1" width="770" border="0">
                              <TBODY>
                                                                        <TR>
                                          <TD><iewc:tabstrip id="TabStrip1" runat="server" TabSelectedStyle="background-color:#f7f7de;color:#000000" TabHoverStyle="background-color:#777777" TabDefaultStyle="background-color:#6B696B;font-family:verdana;   font-weight:bold;font-size:8pt;color:#ffffff;width:79;height:21;   text-align:center" TargetID="MultiPage1">
                                                      <iewc:Tab Text="Page 1"></iewc:Tab>
                                                      <iewc:TabSeparator />
                                                      <iewc:Tab Text="Page 2"></iewc:Tab>
                                                      <iewc:TabSeparator />
                                                      <iewc:Tab Text="Page 3"></iewc:Tab>
                                                      <iewc:TabSeparator />
                                                </iewc:tabstrip></TD>
                                          <td align="right"><asp:button id="valider" runat="server" Text="valider"></asp:button></td>
                                    </TR>
                                    <TR>
                                          <TD colSpan="2"><iewc:multipage id="MultiPage1" runat="server" width="770" backcolor="#f7f7de"></iewc:multipage></TD>
                                    </TR>
                              </TBODY></TABLE>

 <TABLE id="Tab_editor" cellSpacing="1" cellPadding="1" width="100%" border="0" runat="server">
                              <TR>
                                    <TD>
                                    <CE:Editor id="Editor1" EditorWysiwygModeCss="example.css" runat="server" ></CE:Editor>
                                   
                                    </TD>
                              </TR>
                              <TR>
                                    <TD></TD>
                              </TR>
                              <TR>
                                    <TD ><TD>
                              </TR>
                              <TR>
                                    <TD></TD>
                              </TR>
                        </TABLE>

 

 'in the sub load in aspx.vb

 

 If Not IsPostBack Then

            MultiPage1.Controls.Add(page1)
            MultiPage1.Controls.Add(page2)
            MultiPage1.Controls.Add(page3)
            page1.Controls.Add(Tab_propriete)

            page2.Controls.Add(Tab_editor)

end if

 

thanks for your help !