@kevsmarsden - yes; I registered a site named pinstor.com with HostGator and when i type the url into the adress bar, it returns a result of serpstar.org (when I'm logged into WordPress in Chrome). When I bring up another browser and type in pinstor.com, I receive a message of "unable to resolve domain name."
For a little bit of background, I had previously registered pinstor.com with WordPress as a host, but I was having trouble getting the site to show up instead of serpstar.org so switched hosts to HostGator. I waited about 6 hours (as recommended by Support at HostGator) before trying pinstor.com again, to no avail. In any case, my real problem is figuring out how to make separate domains in WordPress point to the desired domain, instead of serpstar.org. Whew. Thanks for the help