Find out who your assigned NJ rep for your account and discuss with them how to begin.
The key is like AK85 stated. set No Reserve.
The other secret is to set your auction to end in 60's.
What I mean is have your rep put your domain list for 30 days in "pre-release" this will put your domains on a list of domains that NJ will send out to their "good customers". Domain investors need TIME to check these so it's best to give them plenty of time.
Soon after domains leave "pre-release" status they go to auction. Someone correct me if I'm wrong but then the domains go to another 30 days before auction ends.
so basically it's always a good idea to give yourself plenty of time.
also don't go do like a list of 100-500 domains like I did. It will just end in disaster.
Try submitting 10 a day or week or month. Request NJ to create your own portfolio on NJ which in turn they will send out to their newsletter subscribers. I think NJ will be picky as to what domains they showcase for good reason. Only quality domains will be showcased.
also don't forget Snapnames is connected to NJ.
Next there has been issues in the past about schill bidding on NJ. not sure if it's been fixed.
and of course not payers. You can just check Namepros for threads on this topic.
Best of luck.
Oh and of course to promote your NJ or any auctions it's best to know where and how to advertise. PM me for info I found about this.