This is a good site to get your questions answered about the operating system that runs your pc whether it's one of the many versions of Windows, or Linux, or *gasp* even DOS!
As per the site description:
Welcome to help-site, your free computer help and support resource! We are in the processes of checking all links in order to remove bad links and the less useful ones. You will also find many new resources have been added and many pages and links updated.
Help-Site currently contains links to 17867 documents and 167 sites!http://help-site.com/c.m/