bawal na pala sa forum ang magtanong if regarding sa HW or in school?
dapat inindicate niyo lang na ang pwede lang itanong sa FORUM na ito is PROBLEM REGARDING TO YOUR PC ONLY.
LOL 
Believe it or not, we have forum rules and they actually
do make it clear that we do not normally help with homework. We do sometimes leave it up to discretion and will lend a helping hand, but we absolutely do not simply do the homework for you. This is a computer help forum, NOT a homework help forum. If your sister isn't willing to learn about computers, perhaps she shouldn't be in a computer class. This is very basic information that is most likely in her textbook. If not, simply typing the question into Google will give you the exact answer you are looking for. Of course, lazy students who do this often get caught.
You received a fair amount of help, but it is now time for you guys to figure a few things out on your own. Read the book; it contains valuable information. You might even learn something.
Topic locked.
