I also work with a product called NXT (from the Company “Next Page” ,  formerly Folio Corp.) This product is a Web Server Product which runs on tiop of IIS,  and serves up Folio infobases,  which are document collections that are indexed and searchable,  and we have used their product for our CD-ROM based publications for quite some time (probably since the beginnings of this department).   They have recently started developing scripting support for many of the functions,  which allow us to use ASP pages (and thus free us in our design from having to be too dependent on their out of the box look and feel….we can use our own,  and just use some scripts to call some of the key functions (like a hitlist for a search,  or bringing up one particular document from a hitlist)