EX-16.1 Resignation of AJ. Robbins, P.C. March 7, 2002 AJ. Robbins, P.C. Certified Public Accountants 3033 E. 1st Ave., #201 Denver, CO 80206 Telephone: (303) 321-1281 Fax: (303) 321-1288 S.D.E. Holdings 2, Inc. Scott A. Deitler 7609 Ralston Road, Arvada, CO 80002 Telephone:(303) 422-8127 Dear Mr. Deitler: This is to confirm that the client-auditor relationship between S.D.E. Holding 2, Inc. (Commission File Number 000-30129) and AJ. Robbins, P.C. has ceased as of March 2, 2002. Sincerely, /s/AJ. Robbins, P.C. - ----------------------------------- AJ. Robbins, P.C. cc: Office of the Chief Accountant SECPS Letter File Securities and Exchange Commission