EXHIBIT 24 POWER OF ATTORNEY We, the undersigned directors and officers of CNB Corporation, do hereby constitute and appoint Robert E. Churchill, James C. Conboy, Jr. and Susan A. Eno , and each of them, our true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for us and in our name, place and stead, in any and all capacities, to sign a Form S-8 registration statement relating to 2004 Employee Stock Purchase Plan and any and all amendments and post-effective amendments to such registration statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, and we do hereby ratify and confirm all that said attorneys-in-fact and agents, or their substitutes, may lawfully do or cause to be done by virtue hereof. /s/ Robert E. Churchill - -------------------------------------- Robert E. Churchill Chairman, Chief Executive Officer and Director Dated: March 25, 2004 /s/ Irene M. English - -------------------------------------- Irene M. English Treasurer Dated: March 25, 2004 /s/ James C. Conboy - -------------------------------------- James C. Conboy President, Chief Operating Officer and Director Dated: March 25, 2004 /s/ John P. Ward - -------------------------------------- John P. Ward Secretary and Director Dated: March 25, 2004 /s/ Steven J. Baker - -------------------------------------- Steven J. Baker Director Dated: March 25, 2004 /s/ Kathleen M. Darrow - -------------------------------------- Kathleen M. Darrow Director Dated: March 25, 2004 /s/ Thomas J. Ellenberger - -------------------------------------- Thomas J. Ellenberger Director Dated: March 25, 2004 /s/ Vincent J. Hillesheim - -------------------------------------- Vincent J. Hillesheim Director Dated: March 25, 2004 /s/ John L. Ormsbee - -------------------------------------- John L. Ormsbee Director Dated: March 25, 2004 /s/ Francis J. VanAntwerp, Jr. - -------------------------------------- Francis J. VanAntwerp, Jr. Director Dated: March 25, 2004