Hi all, thanks to @Sanchez from irc, i solved these problems: 1) Change $OTRS_HOME/Kernel/Modules/System/TicketSearch.pm l. 278 ff. to include the sortBy criteria and the corresponding database fields: my %SortOptions = ( Owner => 'st.user_id', Responsible => 'st.responsible_user_id', CustomerID => 'st.customer_id', State => 'st.ticket_state_id', Lock => 'st.ticket_lock_id', Ticket => 'st.tn', TicketNumber => 'st.tn', Title => 'st.title', Queue => 'sq.name', Type => 'st.type_id', Priority => 'st.ticket_priority_id', Age => 'st.create_time_unix', Changed => 'st.change_time', Created => 'st.create_time', Reporter => 'st.customer_user_id', Service => 'st.service_id', SLA => 'st.sla_id', PendingTime => 'st.until_time', TicketEscalation => 'st.escalation_time', EscalationTime => 'st.escalation_time', EscalationUpdateTime => 'st.escalation_update_time', EscalationResponseTime => 'st.escalation_response_time', EscalationSolutionTime => 'st.escalation_solution_time', ); 2) Changing %PNav in CutomerTicketOverview.pm to %PageNav. Now the CSS Classes for the new columns seem to be generated correctly. Thanks a lot & cheers, Rouven -- Blinkenlichten Open Source Solutions Maass Sacha GbR | Weigandufer 45 | 12059 Berlin tel: +493013896247 | fax: +493013896249 | mob: +491744220127 Web: http://www.blinkenlichten.de/ G+: http://gplus.to/blinkenlichten Blinkenlichten Zarafa Hosted Tweets: http://twitter.com/zarafamail/