修改方法如下：木子博客
http://www.moozi.net/archive/2008/08/07/add-a-title-automatic-translation-for-BlogEngine.aspx
原创，如果任何疑问，请给我留言

        修改BlogEngine.Web/admin/Add_entry.aspx
在<asp:Content ID="Content1" ContentPlaceHolderID="cphAdmin" runat="Server">后添加
<script type="text/javascript" src="http://www.google.com/jsapi"></script>

在<script type="text/javascript">...</script>中加入以下Javascript代码：

    google.load("language", "1");
    function GetTranslate()
    ...{
        var title = document.getElementById('<%=txtTitle.ClientID %>').value;
        var slug = document.getElementById('<%=txtSlug.ClientID %>');
        google.language.translate(title, "zh-cn", "en",
        function(result) ...{  
            if (!result.error) ...{
                slug.value = result.translation;  
            }
            else...{
                GetSlug();
            }
        });
    }

找到<asp:TextBox runat="server" ID="txtSlug" TabIndex="9" Width="400" />，把它后面的<a...></a>改成：
<a href="javascript:void(GetTranslate());">Translate from title</a>

对BlogEngine.Web/admin/Pages.aspx作同样的修改，这次改进就完成了