I would prefer newly made replays. But, since replay hacking is such a tedious process, I will allow pre-made replay to be submitted.
For future references, if it is not stated as invalid within the OP, then it's probably legal. I appreciate you asking first though.
As for the useless posts, please try your best to keep them out of this thread. Only post if you are submitting a replay and/or have a question. Further useless posts will be deleted.