Need something like Doxygen but with additional tags

I have the following situation: I have a lot of C++ sources with embedded documentation that is LIKE to .NET MS standard. It uses tags <summary>, <param>, <returns>:

/// <class name=MyClass>
/// <summary>
/// The class does ....
/// </summary>
/// </class>
class MyClass
{
/// <summary>
/// This is description of the function f1
/// </summary>
/// <param name="arg1">
/// This is description of the argument arg1
/// </param>
/// <returns>
/// This is description of value returned by function f1
/// </returns>
bool f1(bool arg1)
{
...
}
...
}

I need some documentation system that could scan the sources anf generate documenation (in HTML format). Doxygen cannot do this - it recognizes only <summary> and does not recognize <param>, <returns>. Sandcastle could do that if it was .NET; but this is C++.