(1) To capture a screen is to store the image that is currently displayed on the screen in a file. In Windows, you can save the current screen as a graphics image by pressing the Print Screen key on the keyboard. The graphics image can then be pasted into a document or paint program. (Start the Windows Paint program and choose the Edit/Paste menu command to paste the image of the screen.)
(2) To capture a printer port. If several of your PCs are connected together to form a workgroup, or if you are using an office network, then you will have one computer that is connected to the office printer which the other users can share. You have to tell Windows that you want anything that's normally sent to the printer port on your computer redirected over the network to the shared printer. This process is known as 'capturing' a printer port and can be done using the Printer icon in the Control Panel group.
