I just got my mac pro today. First time Mac user after years of being a Power PC user. I think I nailed the basics of installing a program. Basically, the program icon gets dragged to the APPLICATIONS folder and the program is installed. Thus far I installed quite a few programs without a hitch. But has anyone tried installing Firefox? You drag it to the APPLICATIONS folder and several things happen.... First, it shows up as a DRIVE (not a launch icon) on the desktop. When you go into APPLICATIONS and try to launch Firefox, you get a message that says something like:" "Cannot start as application is open already" After several botched install attempts (throwing application files into trash) I go to FINDER and find multiple FIREFOX icon entries that I can't get rid of. How can I start from scratch, clean out all the Firefox crud now on my mac and do a fresh install that will work? Please give very precise instructions as you are working with a newbie here. Thanks!