How to temporarily obscure data?

[Leny]

    
Hi have CPG 1.4.14 but reading this forun i found a post (in CPG1.3 support) that describes what i need:

I'd like to hold a photo contest on my website.

I want users to be able to vote on and comment on photos without revealing the user who submitted the picture, and also without revealing the "actual rate", until the end of the contest.

Is this possible?  How would I go about implementing it?

Well, Nibbler say about it: Just a matter of commenting out the appropriate bits of code.

And now, i want to know: ¿Which files should I comment?
Thanks in advance.