MOSS 2007 provides the search components as Web Parts so that you can customize how and where search results are returned. This flexibility allows you to customize the search center so that results are returned in the most usable format for your organization and users.
The available search Web Parts are
Advanced Search Box: This Web Part enables users to find documents using various search criteria including words, phrases, scope, language, and document type.
People Search Box: This Web Part enables users to search for a person by name, department, title, responsibilities, skills, and memberships.
People Search Core Results: This Web Part displays the people search results and should typically be on the same page as the People Search Box Web Part.
Search Box: This Web Part contains the simple search box found on all portal pages by default.
Search Core Results: This Web Part displays the search results generated from the search box search.
Search High Confidence Results: This Web Part displays the special term and high confidence result sets.
Search Paging: This Web Part displays the search paging capability, so a user can scroll through multiple pages of search results.
Search Statistics: Displays search statistics, including number of results and duration of search time.
Search Summary: Displays search summary.
There are many ways that you can customize the search center to suit your organization. Some of the common search center customizations are