If you have a PHP/MySQL site, don't host it with NetFirms. I chose them because of their time in the business (8+ years providing hosting), and boy was that a mistake. I have two accounts with them. One I had a very simple PHP/MySQL-powered site set up and the servers were SLOW. NetFirms doesn't have good .htaccess modrewrite support and their servers suck ass with PHP and MySQL sites. Worst of all, their support is sh:t. Don't go with NetFirms unless you have a basic XHTML/CSS site - my other account has a one-page site powered by just pure HTML/CSS and loads fine... My experience with them is horrible. Don't go with them. I just switched over to 3ix.org and am much more pleased.
I have to say I only use netfirms to register .com domains as they are pretty cheap for 1st year registrations and it includes domain privacy but thanks for the head up as to their hosting standard.