I have an implementation of the c++ lists that work in
the RCX correctly. I will finish adapting it if there
is interest to include it in the project(document in
doxygen and make it more c++ compliant). I have also a
map implementation, but it would take me some more time
to adapt it. Please tell me if you are interested about
it to pacoarjonilla at yahoo dot es, and I´ll send you
the files together with a little example.