Threat or thread? If you're trying to write a threat - forget about it. If you're trying to write a thread in the archives you can't - it's an archive. If you want to wait for the next tech week you can. If not just post it on the main board.
These guys are correct. Tech threads can get lengthy and have lots if work involved. I would highly recommend writing into a save able word document on your computer and then copy and paste it into your hamb post. Losing it would be a bitch.