有关rewriter的问题

我实现http://www.XXX.com/odp/index.aspx?domain=str
而实际打开的网址是:http://www.xxx.com/odp/str/  (这样成功不了)
http://www.xxx.com/odp/str.aspx       (这样成功)在asp.net中,我是用微软件自己提供的rewrite.dll 文件.但不知为何总是成功不了.其中我bin目录和web.config 文件/根目录和odp目录都测试放了,但还是不行.希望遇到过同样的问题的朋指点.
 web.config 文件如下:<?xml version="1.0"?><configuration>  <configSections>
    <section name="rewriter"  
             requirePermission="false"
              type="Intelligencia.UrlRewriter.Configuration.RewriterConfigurationSectionHandler, Intelligencia.UrlRewriter" />
  </configSections>
  
  <system.web>
      
    <httpModules>
      <add name="UrlRewriter" type="Intelligencia.UrlRewriter.RewriterHttpModule, Intelligencia.UrlRewriter"/>
    </httpModules>
    
</system.web>
    
  <rewriter>
    <rewrite url="~/odp/(.+).aspx" to="~/odp/products.aspx?category=$1" />
    <rewrite url="~/odp/(.+)" to="~/odp/index.aspx?domain=$1" / </rewriter>  
  
</configuration>