Founded in 1948, Robert Half International Inc. (NYSE symbol: RHI) is the world's first and largest specialised staffing firm. RHI is a recognised leader in professional staffing and consulting services, and is the parent company of Protiviti®, a leading independent internal audit and business and technology and risk consulting firm. For the year ended December 31, 2006, net income was $283.2 million or $1.65 per share, on revenues of $4.0 billion. For the year ended Dec…