If you just want to capture a still image of what is on your computer screen, you can use a free image editing program like IRFANVIEW.
You can download this free program at the following link:http://download.cnet.com/IrfanView/?tag=mncol;1
Just click on the underlined text above to get to the download page and then click on the green DOWNLOAD NOW button in the upper left hand corner.
Then follow the onscreen instructions to install this program on your computer.
Once the IRFANVIEW program is installed, start it up and click on the OPTIONS menu at the top of the screen.
Scroll down and select the CAPTURE/SCREENSHOT option.
For CAPTURE AREA, select the #5 option - CUSTOM RECTANGLE / REGION CAPTURE.
Now just click on the START button at the bottom of that screen.
This will start your screen capture. First place the mouse arrow in one corner of the screen image you wish to capture. Now just hold down your left mouse button and move the pointer to create a rectangular capture area around that image.
When you have enclosed the area of the screen image you wish to capture just click the left mouse button once. This will capture that area as an image which is now ready to save as a separate file.
Now click on the FILE option at the top of the screen and scroll down to the SAVE AS option in that list.
Choose a file name for the captured image and a location on your computer to save that file.
That's it. You have just captured and saved a screenshot image which you can open with any image viewing software. Just repeat the process to capture additional screen images.
Thank you for using FIXYA.
Good luck and take care.