I'd like to run another website on my web server. I want to use at least two unique domains. Basically, if someone enters the new domain, say domain.com, it's really accessing a folder on my server (say server.com/domain/, but the url looks like the user is on the domain.com website. I don't have web hosting software that manages multiple accounts like a professional reseller web host. Is there something I setup with the domain name company, and use like a "virtual host" or something like that?

It depends on what you're referring to when you say "my server".

Are we talking about a physical machine at your location? If so, then a specific answer will depend on the software. If Apache, then you'll want to learn the directives and look at the files in the "conf" directory.

http://httpd.apache.org/docs/1.3/vhosts/

http://httpd.apache.org/docs/2.0/mod/qui...

If we're talking about a web hosting account, then if you have cPanel, you'll want to look at the Add-on Domain and possibly Parked Domain features.

http://cpanelguide.net/park.php

http://cpanelguide.net/addon.php

http://www.cpanel.net/support/docs/11/cp...