NOTICE DATE: December 18, 2008 NOTICE TYPE: R-B121808-01 Informational - MarkeTrak User Guide SHORT DESCRIPTION: Changes to the MarkeTrak User Guide INTENDED AUDIENCE: CRs and TDSPs DAY AFFECTED: January 1, 2009 LONG DESCRIPTION: Changes have been made to the MarkeTrak User Guide - Section 6_Non_LSE_DEV per PR80028_01. The updated version is attached to this notice and it can also be found on the MarkeTrak Information page at the following link. http://www.ercot.com/services/client_svcs/mktrk_info/ Please review this document and send any suggested edits to your assigned Retail Account Manager by Thursday, January 1, 2009. ACTION REQUIRED: Market Participants are requested to send any suggested edits to their assigned Retail Account Manager by Thursday, January 1, 2009. CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via e-mail at [log in to unmask] If you are receiving e-mail from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com <http://lists.ercot.com/> . vs