It’s a good thing Mitch over at Firefox Facts followed up on a previous post on launching Firefox tabs through the command line because that led me to more command line arguments from the Mozilla site. Here are some of my picks from the long list:

Start Firefox in Safe Mode: firefox.exe -safe-mode
Open the Firefox profile manager: firefox -p
Start Firefox with a specific profile: firefox -p “user name”
Open a Specific URL: firefox -url http://www.lifespy.com
Open a URL in a New Window: firefox -new-window http://www.lifespy.com
Open a URL in a New Tab (featured previously): firefox http://www.lifespy.com
Search Your Default Search Box Search Engine: firefox -search yourtermhere

You can use the Run command (Windows key + R) in XP or simply use the Start search line in Vista.