Non-Technical Managers in a Technical Company?

Futurepower(R) asks: "Before he was hired, Steve Jobs of Apple told John Sculley he was a sugar-water salesman, and perhaps should have listened to his own words. Under Chairman and CEO Louis V. Gerstner, Jr, IBM did well, but was that only because the world needs a global computer service company? Was IBM technically advanced during his tenure? In your experience, can managers with little technical knowledge successfully run a technically-oriented company?" What qualities would such a manager need to keep a tech company healthy?