vs2005无法在web服务器上启动调试,怎么解决啊？？

config文件里没有让编辑调试的那一句
<compilation defaultLanguage="C#" debug="true" numRecompilesBeforeAppRestart="15">
<compilers>
<compiler language="C#;Csharp" extension="cs" type="MicrosoftCSharpCSharpCodeProvider,system, Version=1050000, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
</compilers>
</compilation>