Web of Knowledge version 5.3 will be launched on 17 July. This updated version will provide a number of new features and enhancements to the service. For example: there will be no stop words; you will be able to use the 'near' operator to search for words in close proximity to each other and thus focus your search; all results will be returned with no record limits.
The Web of Knowledge website: http://thenewwok.com/ provides details of all the new features as well as a range of support documentation.
The library webpages at http://www.brookes.ac.uk/library/research/wosguide.html provide a basic guide to searching and details of features which are particularly useful for researchers.