I NEED A DEMONOID OR TORRENTLEECH INVITE CODE, TRADE?

To answer the Demonoid part of your question -

You will struggle to find someone that will give you an invite unless they know you. If you get warned or banned, they do too.
Your best option would to sign up when they open their doors to the public.
It was open on the 7th Feb, a shame you missed it. It was also open several times throughout January.
Open Registration days can be any day of the week, are not necessarily every month and can last hours or days.
I'd advise you to check the site EVERY day and eventually you will get there.
If you can't get an invite you will need to follow this path, good luck.
Please try and keep your share ratio above 1.1 when you get in.

You may find this tool useful, it's called Tracker Checker and you can leave it running in the background - http://www.stamcar.com/2007/07/25/tracke…
If you use this tool you will need to edit a few trackers, the Demonoid one needs the 'find string' changing from 'sername' to 'Desired username'

I'd love a torrentleech invite too but I can't see that happening any time soon.