Three Separate Issues, One Site

Hi folks,

I host a blog at project-blu.com/nerd and have three issues, the first one listed is becoming quite pressing. Any guidance is appreciated.

1. Internal Link Issues: All my pages and even some of my admin links keep taking me to a particular blog post as opposed to the correct location. Example: I want to go to the About Us page in the menu, when I click on it I end up here (https://project-blu.com/nerd/blog/2012/07/18/nerd-world-super-villains/). This is true for any other page links I have in the menu as well as many of the admin links in the CP.

2. URL Redirect (Site Name): I have the URL (project-nerd.com) purchased from a different provider than my host. Because my WP setup is a Network setup (house multiple blogs), I can’t find a way to make my permanent link project-nerd.com as opposed to project-blu.com/nerd. The instructions for doing this on a single blog do not work for the multi-blog setup and I am having a hard time finding any guidance.

3. Network (Mult-Blog) Setup: I don’t need a networked WP install on my host, as I am only running one blog out of that directory. The problem is, the only way I know how to remove the network option is by manually editing the code in the directory, but this removes my apps and themes as they are installed at the network level (you can’t install at the blog level). Any advice on changing this (easily) to a single blog setup?

Once again, any guidance on these issues will be much appreciated.