Hmmmm, not sure what your asking, I just set up my e-mail on firefox, and all I had to do was right click on the toolbar click customize, and drag the mail icon to the toolbar.
Whan I click on the toolbar it opened up my outlook so it seems to work on mine.
As for the speed, mine was definatly faster on dialup, but on highspeed I cant tell a difference from ie.
Perhaps you need to run ccleaner, or adaware/spybot search and destroy?Here is adaware, spybot search and destroy, and AVG antivirus. And here is ccleaner.
I'm not sure what to do oterwise. Here are some alternate free web browser programs.
Maybey you'll find one that works better for you.