Hi,
here is a nice little explorer plugin and firefox extension called AddPreview.
What does AddPreview do?
* It simply adds a preview in form of a thumbnail to the search results of google, yahoo and msn.
* It lets you retrieve the whois information of the found websites.
* It helps you find similar web pages
* It can show you older versions of the website
* It lets you open the website in a new window
* It displays amazon.com product information when found on google, yahoo or msn
In short: AddPreview enhances your search experience with google, yahoo and msn!