how to brighten a part of picture in photoshop cs3

Hi, give you a video,which vividly shows how to make it:
http://www.wonderhowto.com/how-to-selectively-lighten-photo-with-photoshop-cs3-156063/ Answered Feb, 11 2011

1) You can go to "Layers" in the tool bar, select "New Adjustment Layer" >> "Brightness/Contrast" and adjust your darks and lights that way OR instead of "Brightness/Contrast" you can choose "Levels" which gives you control over the shadows, highlights AND midtones Answered Apr, 06 2011

1st you must have a neutral background, at least it's easier that way...
2nd go to quick mask and select object
3rd go back to regular mode
4th fill/paint with any color
5th go to modify -> border
6th paint in selection
Voila!! Answered Feb, 16 2011

The Magic Wand in Paint Shop Pro is, by far, my favorite selection tool. While it may not be the perfect choice for every situation, it makes selective editing in digital photos so much easier.

What is selective editing? This is a term used when you want to make some change to a certain area or areas of a photo while leaving the rest untouched. An example of this is if you just want to change the color of an item in a photo. Other examples may include changing textures of particular objects, creating a depth of field effect, or brightening parts of an image.

As a demonstration of how to use the Magic Wand, we’ll take the digital photo shown below and sharpen the details in the flower but leave the rest of the image as it is. (You can click any image in this article to see a larger view.)

Original Photo of Flower

First, we’ll need to pick the Magic Wand tool. It can be found with the other selection tools near the top of the left toolbar panel in the Paint Shop Pro interface.

Location of the Magic Wand

Once you select the Magic Wand, a new toolbar will become visible at the top of the interface underneath the main toolbar of the application.

Magic Wand Toolbar

Here, you can define the settings for a number of options. Two of the most import settings here are Match Mode and Tolerance.

The Match Mode determines how you want the Magic Wand to make selections. That is, you decide if you want the tool to select similar pixels based on color, brightness, or some other attribute. In this example, since we want to pick out just the white part of the flower, we’ll select Color for Match Mode.

The Tolerance setting can be a little tricky, and you’ll often have to use a bit of trial and error to find the best value to use here. This setting lets you determine basically how “picky” you want the Magic Wand to be. If you choose a very low setting, the Magic Wand will only select those pixels that are extremely close in terms of the attribute you chose for the Match Mode setting. Higher Tolerance levels will cause the Magic Wand to include a broader range of pixels in its selection.

The best way to find the perfect Tolerance setting is to pick one that is fairly low – approximately 20 or 30 – and then apply the Magic Wand. If the Magic Wand doesn’t select a broad enough area, increase the Tolerance. If it picks up too many pixels, try lowering it a little a time.

In our example, I’m cheating a little because I played around with the Tolerance beforehand and found that 19 worked perfectly for this project.

Read more: http://www.brighthub.com/multimedia/photography/articles/32095.aspx#ixzz16ZFrmS6K Answered Nov, 28 2010