Don't know if this method exist in NT6, but maybe can help you
p_web.ReplyContentType = p_web._GetContentType('.xml')
p_web.ReplyContentFixed = 1
packet.append('<?xml version="1.0" encoding="'&clip(p_web.site.HtmlCharset)&'"?>' & p_web.CRLF)
p_web.ParseHTML(packet,1,0,Net:SendHeader+Net:DontCache)
packet.setvalue('')
Alas, is recommended for security issues and features to upgrade to NT8 (worth every penny) and the WebService Method are very solid and easy to make WebServices.