|EXHIBIT 31.2                   
|-------------------------------
|                               
|CERTIFICATION                  
|                               
|I, Danny W. Huff, certify that:
|                               
|                               
|                               
|                               
|                               
|                               
|                               
|                               
|                               
|                               
|                               
|                               
|                               
|                               
|                               
|                               
|                               



---

|                     |                                                                                                                                       | a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and
|-------------------- | ------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                     |                                                                                                                                       |                                                                                                                                                                                                                                                                             
|                     |                                                                                                                                       | b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.                                                                                               
|                     |                                                                                                                                       |                                                                                                                                                                                                                                                                             
|                     |                                                                                                                                       |                                                                                                                                                                                                                                                                             
|                     |                                                                                                                                       |                                                                                                                                                                                                                                                                             
|Date: August 4, 2003
|                     |                                                                                                                                       |                                                                                                                                                                                                                                                                             
|                     | /s/ DANNY W. HUFF                                  
Danny W. Huff
Executive Vice President -- Finance
    and Chief Financial Officer