Unfortunately, there are few people on this board that will respond to support using olive. You already know the disclaimer. I have heard that there are websites available that talk about how to download and install Olive then upgrade it with their own existing software that they use. But I do not know the exact link!
[KUDOS PLEASE! If you think I earned it! If this solution worked for you please flag my post as an "Accepted Solution" so others can benefit..]
What you are asking for is someone to assist you in pirating software. Installing an Olive in and of itself is not necessarily frowned upon, but asking for someone to provide you a copy of Junos is, as you will be committing piracy.