TeenCat, a word of advice, your posts and questions are severely basic, almost offensively so, like beyond newbie to an uber level of extreme newbieness.... you insult the forum by not even putting in the minimum of effort in learning about the subject at all in the first place....
you need to do some reading
here is a great resource I'll point you to, just because I feel a little sorry for you, but it might fall on deaf ears in case you are one of those "hold my hand every step of the way" types
give this one a try:
http://www.google.com
it's really good, there is all kinds of information you can find through there, but you do have to do some reading and learning, that is the hard part