Veronis Suhler Stevenson has agreed to acquire New York-based media company Advanstar Communications Inc. from DLJ Merchant Banking Partners for $1.142 billion. VSS is being joined by co-sponsors Citigroup Private Equity and New York Life Capital Partners. DLJ acquired Advanstar in 2000 from Hellman & Friedman for approximately $900 million. www.advanstar.com