Jeff Chasney is a success. He started his career as an entry-level programmer, steadily rose through the ranks, and before long he was leading IT departments. “You have to be the expert at everything,” says Chasney, executive vice president of strategic planning and CIO for CKE Restaurants, whose brands include Hardee’s, La Salsa and Carl’s Jr. “I can gut-check every aspect of my IT department.” So can Tom Lindblom, CKE’s VP and CTO, and one of this year’s Ones to Watch winners. In fact, it’s why Chasney nominated Lindblom.

So there you have it. Hone your skills until you can do every IT job with your eyes closed, and you’ll get a one-way ticket to the executive suite. Everyone agrees, right?

Not quite.

“I’m a lousy programmer,” says Charles Church, CIO of the Preparedness Directorate at the Department of Homeland Security. “But it isn’t about being an expert. It is about setting up an environment where people can be successful. My leadership style is to focus on recruiting and process and then get out of the way and let my people operate. And it has ended up being very successful.”

Chasney’s and Church’s leadership approaches couldn’t be more different. Yet both men have not only reached the top of their profession, they’ve managed to thrive there. How is that possible?

“The idea that leadership style makes a successful CIO is total b.s.,” says J.B. Kassarjian, professor of management and organizational behavior at the F.W. Olin Graduate School of Business at Babson College. “There are as many different styles as there are effective CIOs.”

Knowing what style best suits you, and staying true to it is essential whether you are already a CIO or working your way up the ladder. If you are a hands-on person, be a hands-on manager. If you are naturally enthusiastic, use that enthusiasm to motivate the troops. And if you are a quiet strategist, don’t try to manufacture false rah-rah; focus on strategy instead.

“You need to do what fits your hand,” says Kassarjian.

Every CIO needs to find his or her own leadership style. But getting to the top also requires the ability to recognize and capitalize on opportunities to hone what you’ve learned, say the CIOs who nominated the winners of the 2006 Ones to Watch awards, which honor senior staff poised to become tomorrow’s CIOs.

There is only one hard and true requirement: You must understand the business. “The CIO role is all about seeing IT issues as business issues,” says Darren Dworkin, a 2005 Ones to Watch winner who became CIO of Cedars-Sinai Hospital in Los Angeles last January (see “Making It,” this page). After that, say those who’ve made the leap, it’s about having the self-awareness to know your weaknesses, the humility to understand an important lesson and the self-assuredness to take advantage of an opportunity. On the road to becoming a CIO you need to learn the right way to get noticed, to listen to advice and to be patient.