asp.net的handler在IIS6.0中如何配置

我用的是handler来来处理程序，我在环境下运行会有数据，但是我把项目部署到IIS6.0就没有数据，但是错误又不报，我不知道如何配置，我的响应数据库的代码是：
C# code

 //新品区
    function getProduct(opt) {
        var url = "Handler/IndexHandler.ashx?cmd=getProduct";
        $.ajax({
            url: url,
            dataType: 'json',
            type: 'post',
            data: { opt: opt },
            success: function(result) {

                var html = "";
                $.each(result, function(i) {
                    html += '<div class="index_main_three_right_01_footer_01">';
                    html += '<div class="index_main_three_right_01_footer_01_Img">';
                    html += '<a href="Web/Product/ProductShow.aspx?id=' + result[i].ID + ' " target="_blank"><img style="width: 135px; height: 116px;" src="Member/Upload/Product/Thumbnail/' + result[i].Thumbnail + '" /></a></div>';
                    html += '<div class="index_main_three_right_01_footer_01_content">';
                    result[i].Pro_Name = result[i].Pro_Name.length < 12 ? result[i].Pro_Name : result[i].Pro_Name.substring(0, 12);
                    html += '<div class="index_main_three_right_01_footer_01_content_name"><a href="Web/Product/ProductShow.aspx?id=' + result[i].ID + '" target="_blank">' + result[i].Pro_Name + '</a></div>';
                    html += '<div class="index_main_three_right_01_footer_01_content_sc">市场价：<del>￥' + result[i].Pro_PriceMart + '</del></div>';
                    html += '<div class="index_main_three_right_01_footer_01_content_gwj">网购价：<span style="color: red">￥' + result[i].Pro_PriceNet + '</span></div>';
                    html += '<div class="index_main_three_right_01_footer_01_content_gwj">￥PV：<span style="color: red">￥' + result[i].Pro_PV + 'PV</span></div>';
                    html += '</div></div>';
                });

                if (opt == 'new') {
                    $('#spanNewProduct').append(html);
                } else if (opt == 'blank') {
                    $('#spanBlankProduct').append(html);
                } else if (opt == 'hotsell') {

                    $("#spanHotsellProduct").append(html);
                }
            }
        });
    }

高手进来帮帮忙吧!!

后来发先是handler的版本过低