You want to configure the page files on a system. It is a common practice to move the default page file stored on the system root drive (typically C:) to a different disk to improve performance. The page files and system drive are frequently accessed by the operating system and separating them on different disks can improve performance. You may also want to increase the size of the page file or spread your page file across multiple volumes based on the needs of your system.
From the Control Panel, open the System applet.
Select the Advanced tab.
On Windows Server 2003:
Under Performance, click the Settings button.
Click the Advanced tab.
Under Virtual memory, click the Change button.
You'll see a list of all volumes and any page files that have been configured on them. To modify the size of an existing page file, highlight the drive the page file is on, modify the Initial size and/or Maximum size, and click Set. You can also select System managed size to let the system control the size of the page file. To add a new page file, select a drive that currently does not have a page file and select either Custom size or System managed size. If you select the former, enter the Initial size and Maximum size. Click Set when you are done. A performance tip is to set the initial size the same as the maximum size to reduce unnecessary I/O operations.
On Windows 2000:
Click the Performance Options button.
Click the Change