Sun Microsystems expects to lay off around 1,000 staff at a cost of about $100 million as part of the company"s ongoing cost-cutting strategy, according to Sun"s chief financial officer. Sun Chief Financial Officer Steve McGowan announced the layoffs during a Tuesday afternoon conference call on the company"s fourth-quarter fiscal results. Sun took $44 million of the $100 million layoff charge in its fourth quarter and expects to account for the remaining $56 million "over the course of the next four quarters," McGowan said on the call.