I finally decided to build my own computer but have a question. I thought you just put in a new hard drive and installed the os. The seagate hdd that I want to buy has a discwizard starter edition disc. Do I really need this to get started or can I just do the os. What are the benefits of the starter disc? Is there any good site on the science of building your own computer that tells you the best steps in putting it together? Thanks.