If you have multiple Gmail accounts, Yahoo mail or Hotmail accounts, some times you may want to open more than one account at the same time in your browser. Normally this is not possible in Firefox browser.
Microsoft has recently announced the general availability of the next release of Outlook Hotmail connector (version 14, beta) for Microsoft Office 2003, 2007 and the upcoming release of Outlook 2010.
Outlook Hotmail connector lets you access and manage your Windows Live Hotmail or Office Live Mail accounts, including e-mail messages, contacts and calendars for free