Put Firefox on your pendrive, still use your bookmarks, extensions and passwords, all portable.
http://portableapps.com/apps/internet/firefox_portable
From portableapps.com:
“Mozilla Firefox is a fast, full-featured web browser that’s easy to
use. It has lots of great features including popup-blocking,
tabbed-browsing, integrated search, improved privacy features,
automatic updating and more. Plus, thanks to the PortableApps.com
launcher bundled in the Mozilla Firefox, Portable Edition, it leaves no
personal information behind on the machine you run it on, so you can
take your favorite browser along with all your favorite bookmarks and
extensions with you wherever you go – mozilla.org”
