Computer sales site articles needed

We are a computer sales site company and we need 20 articles written. They need to have 500 words with 5 to 6 keywords. We also need them to be blogged. These articles need to be written in English and need to very informative (so make sure you understand how computers work) This is just the beginning meaning that if you do a good job more work will come from this! Please keep in mind that when they are written we need you to blog them. Make sure that you know how to do this!