Just install the client and follow the instructions given in the FAQ.
You will not have to submit any details, the usenext account generator will let you set it up without registration.

UseNeXT is anonymous and ad-free access to over 200 terabytes worth of MP3s, videos, games, pictures, and software. UseNeXT offers anonymous and lightening fast access to over 60,000 Usenet discussion boards packed with MP3s, videos, games, pictures, and software. Forget file sharing or partial files--UseNeXT users never need to upload anything--and with direct access to our high-speed Usenet servers you'll be able to search for and download files faster. The tailor made browser automatically unpacks and repairs failed downloads, and the built in media player allows you to preview play files before downloading even when archived.

Here are 12 UseneXT Free Trail Accounts with 1000 MB each. They are all valid for 14 days from the time of this post. I will be posting many more if I get a good response. So enjoy!!

To use these accounts you must have UseneXT Client. Download the Client in the below link. Install it and go to Server->Settings. There give the login details.

This is a special trail client of the biggest Usenet-Provider 'Usenext'. This version allows you to sign up with just an e-mail adress and no full registration.

How to:
-enter your mail adress
-you will receive an e-mail with your account details for a free Trail-Account.
-Happy Leeching

Many premium accounts: fulldownloadaccess.com, downloadprofessional.com, sharingzone.net, megadownloadpass.com, unlimitedgamedownloads.com, usenext.de, divxcrawler.com, fulldownloads.us, gamedownloadnow.com, gamespot.com, megashare.com, rapidshare.com, etc.
Maybe you need to download from those sites without restriction of time or speed.
I've tried few of them, some work, some not. Good luck.