There is nothing wrong with DPP. And it's free.
Many prefer an Adobe product. Photoshop Elements 11 is just starting to hit the shelves. It's excellent and a steal at $99. You can download a free trial (1 month-no strings attached) at Adobe. It has an excellent and complex organizer. Or it will simply download to "My pictures" in a variety of ways. It has a great editor as well.
Then there is full-blown Photoshop and , also, Photoshop lightroom. My opinion for a beginnere is PSE 11.