Umm...
You could go into the Crew Forum and type 'fan' in the Search in Forums thinger.
The threads of that discussion come up there.

Otherwise Rules says:

1.) Fan Fiction is not acceptable on WritersCo, we feel that members should use their own imagination to create their own works rather than depending on others.

:(

But I think I read in one of the threads that it was ok if you changed all place names or something?