Hi,
[snip]
Presently the setting for rip is:
router rip version 2 passive-interface [[FastEthernet]]0/0 network aaa.bbb.ccc.0 no auto-summary
is that aaa.bbb.ccc.0 a *public* IP class?
if it is with the conf below:
router rip version 2 passive-interface [[FastEthernet]]0/0 network aaa.bbb.ccc.0 network 192.168.0.0 network 10.0.0.0 no auto-summary
you inject private addresses to the other (public?) router...
if aaa.bbb.ccc.0 is another *private* class the configuration should be ok...
maybe i misunderstood your question ...
cheers