Exhibit 23.1

CONSENT OF INDEPENDENT PUBLIC AUDITORS

As independent public auditors, we hereby consent to the incorporation of our reports included in this Form 10-K, into the Company’s previously filed Registration Statements on Form S-8 (SEC File No. 333-07043 and 333-70451).

	/s/ ERNST & YOUNG LLP
San Antonio, Texas
March 28, 2003