Jisho.org Forum

Try the Core 2000 on Smart.fm

http://smart.fm/explore/goals?keyword=tagged%3A+Core+2000

When you finish that, they have another 4000 words to get you to 6000.

Just a personal opinion, but I'm not sure word lists are that useful once you get to intermediate level. That's based on my personal experience - yours might be different.

Here you can find the official JLPT lists:

http://www.thbz.org/kanjimots/jlpt.php3

Richard, thank you for recommending Smart.fm
I was going to try to use it with out signing up, but I quickly realized the greater benefit from signing up and working with it.
I was definitely having a tough time with working on vocab practice alone. This will be a nice new approach to drills.

http://www.irohaproject.org/blog/free-online-japanese-lessons/

Free Japanese lessons by email 1 lesson a week for 17 weeks beginning with hiragana for the first 2 weeks and then each lesson includes dialogue, vocabulary and grammar notes.

u could just buy a jap dictionary and learn as many words as u can.