If you have the stock wheels (with spokes), you will need a tube. I just got a D404 Dunlop and it is tubed.
I use DennisKirk.com website, because I've bought from them before and I'm familiar with their searches, but when I was researching, I made a spreadsheet for comparison using Dennis Kirk, Tires Unlimited, Bike Bandit (alot of people here love them), and Jake Wilson Tires. I'm sure that Dennis Kirk notes whether a tube can be used or not.
http://www.denniskirk.com/jsp/tpl/tire/product.jsp?skuId=&store=&catId=&produ...I ended up buying from a local service shop.