trouble with scopes and namespaces

[Fernando]

Hi!

    I have this situation:

a) A module with MANY variables in it.
b) Another module with many functions that operate on these variables
c) n Modules that  may or not (usually will) modify the value of some of the
variables in module (a) and then call some of the functions in module (b)
(using the update values).

What's the best way to handle this?  Module (b) can include module (a), but
not modules (c).  How can I make these variables global to all the modules?
Passing the variables as parameters to the functions in modyule (b) would be
a pain because of the number of variables involved...

TIA