I just use Keyboard Shortcuts experiment (http://www.google.com/experimental/), which hasn't been updated to a new version. I can't image searching without it.
Same here. I'm hoping that enough other people are hooked that someone will create a Firefox extension for it.
Give it some time. The keyboard shortcuts experiment was disabled because it didn't work with the new interface and there wasn't time to fix it, but there's some attention being put into updating it now.