Windows' Paint program allows users to make changes to existing graphics, or create brand new ones at no additional cost. Interestingly, we can count at least ten different graphics packages that are more popular and widely used than this free one. While it doesn't offer as many editing tools, it does provide the essentials and it can open/save graphics in .

Sometimes, the data comes from an outside source like the Internet or the computer that the program runs on. The data that a program receives is called input and data that the program generates is called output. Other times, the data is unknown. If the program were working with a simple algebra equation like, "x + 5 = y," the variables "x" and "y" would be unknown pieces of data.

Since we're describing a home network that will connect to the Internet, you're strongly advised to install a protective firewall program to thwart Internet viruses, worms, or other damaging spyware code. Firewalls prevent - but they don't repair. Only anti-virus and anti-spyware programs can reverse damage.

Take the time to investigate software tools that put you in control and allow you to block access to certain websites. If you use an online service like AOL (America Online), you can use its internal Parental Control settings to block access to various chatrooms and websites. You could even block instant messaging and email from anyone who isn't a fellow AOL user.

Context menu - like the menu bar, a context menu displays when a user right-clicks on something. It displays commands just like what you see on a File menu or a Help menu. Input box - input boxes are usually small rectangles that allow you to type data into a simple interfaces like a webpage or browser window.

Select a store. Having an idea of what you want in a computer and what kind of computer that you want, your only task left is to select the place in which you want to buy it. There are a number of places available including computer store outlets, online stores, auction sites, used computer stores, or your friendly neighborhood yard sale.