Complicated use of Hash_maps (or something else)

[MTom]

I'm working on a "Scripting Engine" of my, and i'm having problems with something:

My engine has object structure like that:

          File
               File.Open()
          Screen
               Screen.Write()
               Screen.Draw()
          Error()
          Execute()
          Net
               Net.Socket
                    Net.Socket.Open
               Net.HTMLParser
                    Net.HTMLParser.Parse()
               Net.HTTP
                    Net.HTTP.Download()
                    Net.HTTP.Upload()

(hasn't yet been implemented)

Now, I plan to store those identifiers in multiple nested hash_maps. The root (top) hash_map would include Top elements (Screen, File, Error() above) in pair (String, Identifier):

     struct  Identifier{
          int Type;                // INT, STRING, BOOL, Object ...
          void *Value;
     }

Identifier.Value may point to real value (like 100 if INT, 'c' if char, address of a function...),
but if it's a object (like Screen above), it would point to another hashtable containing it's elements (Write() and Draw() above)

(Please, if you don't get it, message me and i will try to explain a bit better)

Is there any faster way to deal with this?
Anybody knows it?