A new Search extension for Mozilla/Netscape/Firefox
for the search box in the right top of your browser window.

Note: unless there is a fix from the mozilla developers,
you need to make the directory /usr/lib/MozillaFirwfox/searchplugins writeable for your user.

Install Linuxhowtos.org Search into your browser

For adding a quicksearch to Konqueror do the following:
Go to Settings->Configure Konqueror->Web Shortcuts
Click on "New"
Search provider name: Linux Howtos
Search URI: http://www.linuxhowtos.org/search/?extern=konqueror&q=\{@}
URI shortcuts: lhto (or whatever you like :} )
Enter lhto:Konqueror
and you should see this page.