Optimize your paging file

Windows XP uses a paging file on your hard disk to store information when the amount of available RAM memory isn't sufficient to hold all the data that is being processed. For instance, when you are working on a very large Word document that is too big to fit in your computer's RAM, Windows XP starts swapping part of it's data in and out the paging file on your hard disk.
Hard disk access is typically a lot slower than RAM access, that's why you should optimize your paging file.

• Click the Start button, right click "My Computer" and select "Properties"
• Select the "advanced" tab
• Under "Performance" click on the "Settings" button
• Again, select the "advanced" tab
• Under "Virtual Memory" click on the "Change" button

Windows will then show the available hard drives in your computer and the paging file settings for each drive. If you have more than one hard disk, you should place your paging file on another disk than the system disk (where Windows is installed).
That is to avoid contention on the disk controller when Windows is working with system files and the paging file simultaneously.
Usually the system disk is C:, so select any other disk if you have one and then check the "Custom size" radio button. Type in the same value for "Initial size" and "Maximum size", so that Windows doesn't need time to resize the paging file while you are working with your computer. Microsoft recommends about 1.5 times the amount of RAM in your computer. Click the "Set" button to commit the changes you have made.

It is possible to have multiple paging files on multiple disks, but try to avoid having a paging file on your system disk. Just select that disk and select the "No paging file" radio button.