Exhibit 31.1

Certification of Principal Executive Officer required by SEC Rule 13a-14(a)
(17 CFR 240.13a-14(a)) or Rule 15d-14(a) (17 CFR 240.15d-14(a))

I, Jeffrey W. Griffiths, certify that:




Date: September 2, 2005

 

By:

 

/s/  
JEFFREY W. GRIFFITHS      
Jeffrey W. Griffiths
President and Chief Executive Officer (Principal Executive Officer)