[Mono-list] System.DirectoryServices implementation

[Manung Han]

I have finished the first pass of the stubs for the
System.DirectoryServices namespace.

Now while researching the approach for the implementation of the
classes, I noticed that Microsoft's implementation is obviously a
wrapper around ADSI.
 
My original thought for the implementation was to implement some LDAP
helper classes.  But what is the recommended solution for obviously
Windows specific methods such as DirectoryEntry.NativeObject and
DirectoryEntry.NativeGuid?  Also most the methods throws COMExceptions.
Should I throw COMExceptions in my implementation?

Thanks,

Manung Han