United States Securities and Exchange Commission Washington, D. C. 20549 form 10-K

Property and equipment are stated at cost. Depreciation is computed principally on the straight-line method over the estimated useful lives of the assets. The useful lives for buildings range from five to 15 years, leasehold improvements generally range from two to 10 years (representing the applicable lease terms plus reasonably assured extensions), computer equipment and software range from two to three years, and furniture and equipment range from one to five years. Land is not depreciated.

During fiscal years 2009, 2008, and 2007, depreciation expense was $1.7 billion, $1.4 billion, and $1.2 billion, respectively. The majority of depreciation expense in all years related to computer equipment.

NOTE 9    ACQUISITIONS

We acquired nine entities during fiscal year 2009 for total consideration of $925 million, substantially all of which was paid in cash. All of the entities have been consolidated into our results of operations since their respective acquisition dates. The purchase price allocations for these acquisitions are preliminary for up to 12 months after the acquisition dates and are subject to revision as more detailed analyses are completed and additional information about the fair values of assets and liabilities becomes available. Any change in the estimated fair value of the net assets of the acquired companies within this timeframe will change the amount of the purchase price allocable to goodwill. Pro forma results of operations have not been presented because the effects of these acquisitions, individually and in the aggregate, were not material to our consolidated results of operations.

NOTE 10    GOODWILL

Changes in the carrying amount of goodwill for fiscal years 2009 and 2008 by segment were as follows:

(In millions)		Balance as of June 30, 2007				Acquisitions			Purchase Accounting Adjustments and Other				Balance as of June 30, 2008			Acquisitions			Purchase Accounting Adjustments and Other				Balance as of June 30, 2009
Client		$		77		$	77		$	(1	)		$	153		$	1		$	(77	)		$	77
Server and Tools				580			90			68				738			233			67				1,038
Online Services Business				552			5,775			(53	)			6,274			447			(64	)			6,657
Microsoft Business Division				3,132			1,073			(14	)			4,191			_			(264	)			3,927
Entertainment and Devices Division				419			354			(21	)			752			58			(6	)			804
Total			$	4,760		$	7,369		$	(21	)		$	12,108		$	739		$	(344	)		$	12,503