Click Start, click Control Panel, click Performance and Maintenance, and then click System.
Click the Advanced tab, and then click Settings under Performance.
Click the Advanced tab, and then click Change under Virtual memory.
Under Drive [Volume Label], click the drive that contains the paging file you want to change.
Under Paging file size for selected drive, click Custom size, type a new paging file size in megabytes (MB) in the Initial size (MB) or Maximum size (MB) box, and then click Set.