请帮我在iis7.5环境下重写一下web.config伪静态规则，万分感谢

Question

实在不会，也看不懂，想把网站改成伪静态方便搜索引擎收录。
IIS组件已经安装好了，剩下web.config搞不定，求大家帮助。

<rewriter>
    <!--首页-->
    <!--
    <rewrite url="~/default.html$" to="~/default.aspx" processing="stop"/>-->
    <!--
    -->
    <!--新闻-->
    <!--
    <rewrite url="~/news/list-([A-Za-z0-9-]*).html$" to="~/NewsList.aspx?typeUrl=$1" processing="stop"/>
    <rewrite url="~/news/list-([A-Za-z0-9-]*)-([0-9]*).html$" to="~/NewsList.aspx?typeUrl=$1&amp;page=$2" processing="stop"/>
    -->
    <!--新闻详细-->
    <rewrite url="~/product_1-([A-Za-z0-9-]*)-([A-Za-z0-9-]*).aspx$" to="~/product_1.aspx?NewsID=$1&amp;PID=$2" processing="stop"/>
    <rewrite url="~/news-([A-Za-z0-9-]*)-([A-Za-z0-9-]*).aspx$" to="~/news.aspx?ClassID=$1&amp;PID=$2" processing="stop"/>
    <rewrite url="~/news1-([A-Za-z0-9-]*)-([A-Za-z0-9-]*).aspx$" to="~/news1.aspx?ClassID=$1&amp;PID=$2" processing="stop"/>
    <rewrite url="~/news2-([A-Za-z0-9-]*)-([A-Za-z0-9-]*).aspx$" to="~/news2.aspx?ClassID=$1&amp;PID=$2" processing="stop"/>
  </rewriter>