Just a quick helper here. This is a great page i found to help you get firefox to do more.

A couple of my favorite extentions that today I quickly found I can not live without:

Session Saver – Productivity : I want to … – No. 10
Undoclosetab – Tabs : I want to … – No. 10
Remember Passwords for Yahoo!, Banks, etc. – Create a bookmark with this, then click the bookmark on pages that don't remember you password for you
Web Developer – Web Development : I want to …- No. 32