Use this link to backup from a Windows system
https://help.ubuntu.com/community/SwitchingToUbuntu/FromWindows/TransferringFilesAndSettings
Restore and import Mozilla Firefox stuff
Export IE cookies
http://www.ghacks.net/2007/02/27/how-to-migrate-from-internet-explorer-to-firefox/
Also look at https://addons.mozilla.org/en-US/firefox/addon/2848