A couple of widgets are available for Web of Knowledge which let you search from your web browser or desktop. They allow you to carry out a topic search across the Web of Knowledge and an all databases search.
Web Browser Extension
This widget lets you perform a search from your browser's search bar. It is only supported in Firefox 2 and above and IE 7 and above. Get the extension from:
Internet Explorer: http://isiwebofknowledge.com/webtools/browsersearch/
This widget allows you to search Web of Knowledge from your desktop. Get more information and download the information from http://wokinfo.com/wok/webtools/widget/