I use the SenseSites scripts for the majority of my sites. It's user friendly, easy to customize and it's FREE. You can even get pre-built websites and sign up for daily auto-updates. I HIGHLY recommend SenseSites.
Another great article directory software I use is Article Dashboard. I personally find not nearly as easy to customize as Sensesites, but it's still good. To download the Article Dashboard software for free just go to: ArticleDashboard
As for as article submission, I submit all my articles through Article Marketer. They submit to thousands of sites and I get one-day turnaround on my submissions. Again, HIGHLY recommended. ArticleMarketer.com
