EXHIBIT 10.5 FIRST AMENDMENT TO CREDIT AGREEMENT FIRST AMENDMENT (this "First Amendment"), dated as of January 17, 2003, to the Amended and Restated Credit Agreement, dated as of March 8, 2002 (as heretofore amended, the "Credit Agreement"), among...Credit Agreement • March 31st, 2003 • Penton Media Inc • Periodicals: publishing or publishing & printing • New York
