offset by legal expenses of $2.08 billion related to settlements with IBM, Novell, Gateway, and end-user class action plaintiffs to resolve antitrust issues and other matters. In fiscal year 2004, the operating income decline was caused primarily by $2.53 billion of legal charges and $2.21 billion of stock-based compensation expense related to our employee stock option transfer program, mainly offset by an increase in revenue. 

 

We implemented changes in employee compensation in fiscal year 2004 whereby employees are granted stock awards rather than stock options. We also completed an employee stock option transfer program in the second quarter of fiscal year 2004 in which employees could elect to transfer all of their vested and unvested stock options with a strike price of $33.00 or higher to JPMorgan Chase Bank (“JPMorgan”). The unvested options that were transferred to JPMorgan became vested upon the transfer. A total of 345 million of the 621 million eligible options were transferred, which resulted in additional stock-based compensation expense of $2.21 billion in the second quarter of fiscal year 2004. As a result of these changes, stock-based compensation expense decreased in fiscal years 2006 and 2005, and we expect stock-based compensation expense related to stock options to continue to decrease in fiscal year 2007. 

 

Fiscal Year 2007 Outlook 

 

In fiscal year 2007, we expect continued double digit revenue growth primarily as a result of the upcoming launches of Windows Vista and the 2007 Microsoft Office system. We estimate worldwide PC shipments will grow between 8% and 10%. We expect that PC unit growth rates will be higher in the consumer segment than in the business segment and higher in emerging markets than in mature markets. We estimate worldwide server unit shipments will grow between 10% and 12% in fiscal year 2007 as compared to fiscal year 2006. We do not expect a significant impact from year-over-year foreign currency exchange rates in fiscal year 2007. 

We expect our operating income growth rate to lag our revenue growth rate in the first half of fiscal year 2007 due to an increasing mix of Xbox 360 console revenue and related costs, coupled with significant investments in preparation for the launches of our flagship products. We expect this trend to reverse in the second half of the fiscal year when we expect operating income to grow faster than revenue. 

 

SEGMENT PRODUCT REVENUE/OPERATING INCOME (LOSS) 

 

Our seven segments were Client; Server and Tools; Information Worker; Microsoft Business Solutions; MSN; Mobile and Embedded Devices; and Home and Entertainment. On July 17, 2006, we announced a change in our operating segments reflecting the culmination of our realignment announced in September 2005. These changes will be effective for fiscal year 2007; the seven segments discussed in this analysis are presented the way we internally managed and monitored performance at the business group level in fiscal years 2006, 2005, and 2004. 

The revenue and operating income/(loss) amounts in this section are presented on a basis consistent with U.S. Generally Accepted Accounting Principles (“GAAP”) and