Upgrading from Web Filter or Web Security v7.x http://www.websense.com/content/support/library/web/v751/ws751_v7xupgrade/first.aspx
        <p>Direct upgrades to Websense Web Security and Websense Web Filter version 7.5.1 are supported from v7.0 and higher.</p>
        <p>To upgrade from versions prior to v7.0, see Upgrading from Websense Enterprise v6.3.x to v7.5.1.</p>
        <p>New features for this release are described in the Release Notes for Websense Web Security and Websense Web Filter, version 7.5.1.</p>