John,  The attached file is a chronology of the OOMC services Enron has provided since the opening of the market.
I thought you might find this useful for submitting disputes over OOMC payments.
<<Enron OOMC Chronology.xls>>  Bill Kettlewell Client Service Representative Electric Reliability Council of Texas E-mail:  BKettlewell@ercot.com Telephone:  (512)248-3172 Pager:  (800)771-5302   - Enron OOMC Chronology.xls

OOMC Chronology