I've been working on this in earnest for 3 days now.
What I've come up with so far is I created a page (and thus it is in the menu, perma-link ) and am using a custom page template ( category-k9forsale.php using the code that category.php uses) and gave the page the permalink 'k9forsale'.
I have a category called 'k9forsale'. I've created 2 posts and assigned them to this category.
I have tried following these;
http://wordpress.org/support/topic/custom-category-page-4?replies=6
http://codex.wordpress.org/Pages#A_Page_of_Posts
http://codex.wordpress.org/Conditional_Tags
Help. :-(
All I'm getting at this point is a page that states the page title but with no posts showing up. Oh, and I'd love for the comment form to be gone from this page of category posts as well.
I promise I'll pay it forward...