Searchiteminfo contains:

• Title - Title of the item in the search results
• Description - Description of the item in the search results
• Author - Userid (integer) of the author (from users table)
• Pubdate - Date so the searchengine knows the age of the content (I usually use a Lastmodifieddate field, so the search engine 'knows' when it should be indexed again)
• Moduleid - the id of the module which is indexed
• Searchkey - unique key for the searchitem, you really need to make this unique!!! or you'll get errors.
• Content - the content that will get indexed by the search engine
• GUID - field for linking to the search item
• Image - option image file id (integer) for the item