Online brokerage Harrisdirect has launched a creative review and hired ADvice & ADvisors in New York to manage it, the consultant confirmed. Sources estimated billings at $20 million. The Jersey City, N.J., client split with Euro RSCG in New York in November after the Havas agency landed Charles Schwab, said sources. Client executives will visit six to eight shops and select four finalists, sources said. A decision is expected by mid-April.