Exhibit 16 Letter from Graf Repetti & Co., Item 304(a) Graf Repetti & Co. July 1, 2002 Securities & Exchange Commission 450 5th Street, N.W. Washington, D.C. 20549 Re: REDCELL POWER CORPORATION (formerly Infobooth, Inc.) Gentlemen: Pursuant to the request of the above referenced Company, we affirm that: (1) We have read the Company's response to Item 4 of Form 8- K/A dated July 1, 2002; and (2) We agree with all the disclosures, and those revised, that are reflected in the amended Form 8-K. Very Truly Yours, /s/ Graf Repetti & Co.