anonymity

Hello,

I'm trying to set s a basic indymedia-style site in a very short period of time (days). The most important thing should be that anonymous users can publish political news anonymously -- and by this I mean that not only will the users be able to publish their stories without prior registration, but, importantly, that their IP addresses and locations must be impossible to trace. Because of the current political situation, it is very important that the users are guaranteed that it is no-way that the governement will be able to trace their true identities!!!