If you upgraded to Lightroom 4 and imported some new images, you might be a bit perplexed with the Develop module’s Basic controls. Fill Light, Recovery, and the Brightness sliders are gone.
Here is an explanation in the Lightroom Journal: http://adobe.ly/wMpLrU
Julieanne Kost goes into detail in this video:
The Lightroom Queen, Victoria Bampton, provides a quick insight in how to think about these new controls:
By the way, if your question is: Where are these new controls? They are right there in the Basic panel, but you need to convert your image to Process Version 2012. Click the ! icon in the lower right of the image area. Julieanne discuss this in her video.