Sky Dayton, the founding chief executive officer of Internet Service Provider Earthlink, is the CEO of Earthlink’s wireless joint venture with SK Telecom of South Korea.

Dayton, who also launched Boingo Wireless, was introduced today along with the rest of the SK-Earthlink management team at a news conference in Los Angeles. The new company will be based in Westwood CA.

SK-EarthLink already operates wireless services offered by EarthLink, which has its headquarters in Atlanta. SK-EarthLink said it would launch a “new” brand in the near future.

Wonhee Sull, the former chief technology officer of SK Telecom’s wireless data operation, will serve as chief operating officer of the new venture.

Brent Cobb, who was vice president of wireless at EarthLink, will be SK-EarthLink’s executive vice president of strategy and business development.

EarthLink and SK Telecom have each agreed to invest more than $200 million in the joint venture through 2007.

The company will operate as a “mobile virtual network operator”, meaning it will use network infrastructure from other companies.