Hi,
you can try this code :
<%@ Page Language="C#" Title="First sample" %>
<%@ Register TagPrefix="CuteWebUI" Namespace="CuteWebUI" Assembly="CuteWebUI.AjaxUploader" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
<html xmlns="
http://www.w3.org/1999/xhtml">
<head runat="server">
</head>
<body>
<form runat="server">
<CuteWebUI:Uploader runat="server" ID="Uploader1" InsertText="Uploader1">
</CuteWebUI:Uploader>
<br />
<CuteWebUI:UploadPersistedFile runat="server" ID="UploadPersistedFile1" InsertText="UploadPersistedFile1">
</CuteWebUI:UploadPersistedFile>
<br />
<CuteWebUI:UploadAttachments runat="server" ID="UploadAttachments1" InsertText="UploadAttachments1">
</CuteWebUI:UploadAttachments>
</form>
</body>
</html>