EXHIBIT 17.1 From: George Pratt Sent: Wednesday, May 09, 2007 9:51 AM To: Davis, Steve; Bleck, Dale; Heckler, Ann Subject: Resignation To: President, Chief Financial Officer and Secretary of CET Services, Inc. Please be informed that I, George Pratt, hereby resign as a Director of CET Services, Inc., effective immediately on this day, May 9, 2007. Hard copy will be sent this day via U.S. Postal Service. George Pratt