Using zen 1.38 on a fresh install. Used the classic temp, no addons or anything installed.

Bare with me, i'm a programmer at heart, but hate php with a passion, call it a bad teacher... Also I installed zencart last night, so if I seem thick at first, its because, well.... at this point I am.

First, how do I remove unused links from the sitemap? I've read the tut's and other forum Q's but I haven't seen this yet. Please see :
http://project-computers.com/index.p..._page=site_map and at the bottom you will notice that I removed the name of a file at some point, but it did not remove the bulletin. Also I created EZ-Pages version of Information bar, and stopped using the one provided and it is sitting in limbo as well. Since I do not plan on using some of them, will having loose files be a problem, meaning I don't plan on using "Page 4" so I have not deleted it, but should I, and if so how?

More importantly, and i'm assuming I accidentally did this at some point. My url is: http://www.project-computers.com/ after clicking on a link, say home you are taken too http://project-computers.com/ notice no www. It also stretches the site a bit, giving the pictures a blurry appearance. I use Immotion Hosting that provides an install of Zen for you. How I can I have my site link to www, and why would it be a slightly stretched site when its not? Thoughts?

Thanks!