>> Peter Chehayl leaving wireless-service provider Centennial Communications on an upbeat note… Chehayl resigning as CFO, SVP, treasurer to chase unnamed other interests… Last month, Centennial raised guidance for fourth-quarter EBITDA from $65 million to $70 million, citing revenue growth and cost controls as well as seasonal factors…

Chehayl joined Centennial in January 1999, when company was going through leveraged recapitalization… Since then company’s been doing somewhat better… Before joining Centennial, Chehayl was VP, treasurer for 360 Communications Co., and VP of capital markets for Sprint before that…

>> RemedyTemp, a temporary-staff outfit that operates as Remedy Intelligent Staffing, says CFO Alan Purdy to retire at end of 2002… Purdy, 62, joined company as finance chief in 1994… Previously held CFO posts for Builder’s Emporium, Miller’s Outpost, Robinson’s of Florida (a division of May Co.), and the B. Dalton unit of Target Corp.… Remedy’s share price dove 34 cents when announcement was made last Thursday, closing at $16.41 that day… Company has begun quest for new finance chief…

>> Rib-X Pharmaceuticals, a privately held biotech company that prospects for new antibiotics, named Robert A. Conerly to new posts of CFO, VP of finance… Conerly joins Rib-X from Pharmion Corp. in Boulder, Colo., where he filled same slots… Led specialty pharmaco through $65 million private equity financing in November 2001…

Before Pharmion stint, Conerly spent six years at AstraZeneca Plc, toiling in both the United States and Europe… Held variety of finance positions, including director of business performance for the then—newly merged AstraZeneca… Started out as PricewaterhouseCoopers auditor….