If you are looking for a free tool to capture your desktop (PC) screen then Sniptool is the right choice for you. It is not only free but also it doesn't require any download. All you need to do is to run the Sniptool EXE, point and click on the tool icon, choose "scan", and start capturing your screen live. In just a few second you will have a perfect screen shot of your desktop. Here is how to download and install the Sniptool application on your Windows Vista or Windows 7 PC.
Sniptool is a free screen capturing software that comes with a powerful image editing feature. You can combine several picture editing operations such as renaming, moving and resizing, cropping and filling with one single operation, while the number of image editing options is unlimited. Run the Sniptool EXE, point and click on the "scan" icon and a small window with a red start button appears on the screen; this is a simple floating image cursor you can move around on the screen. The software supports three screens capturing mode: Freehand, Region and Windows. After you click the start button, a large number of screenshots will be taken, you may want to get rid of some of them if you don't need them anymore.
Once you have downloaded and installed Sniptool you should notice the difference in quality of the captured images. The Windows screenshots are far better than the other two, which is very obvious when comparing the pictures taken with each of the modes. The freehand picture editing mode should be good enough for most people, it allows you to customize almost all the graphical aspects of the captured image and there is a comprehensive help file included with the software. The only thing I would recommend changing while using the free hand mode is to turn off the 'auto-completion' option as this often leads to extra clicks when filling out fields and the result is not always perfect.