http://blogit.create.pt/blogs/ricardocosta/archive/2007/06/15/How-to-use-KeywordQuery-to-search-in-WSS.aspxFirst, you have to add the following references: Microsoft.Sharepoint Microsoft.Sharepoint.Search Second: DataTable resultsDataTable = new DataTable(); using (SPSite site = new SPSite( "http://server" )) { KeywordQuery query = new KeywordQuery(site);enCommunityServer 2.1 (Build: 60809.935)