NOTICE DATE: May 06, 2008 NOTICE TYPE: R-A050608-01 Informational - Retail CLASSIFICATION: Public SHORT DESCRIPTION: ERCOT's MarkeTrak application will be unavailable. INTENDED AUDIENCE: CRs and TDSPs DAY AFFECTED: 7:00 PM Friday, May 9, 2008 through 12:00 PM Saturday, May 10, 2008 LONG DESCRIPTION: ERCOT will be bringing down the MarkeTrak application at 7:00 PM on Friday, May 9, 2008 in support of the scheduled upgrade of MarkeTrak on Saturday May 10, 2008. 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] <BLOCKED::mailto:[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/> DP/JA