How To Change The Virtual Memory Size

Virtual memory is disk memory used by Windows operating system to manage applications when they exceed the amount of RAM configured on the computer. It's important that the virtual memory be at least two or three times the size of the amount of RAM. This means if you have 512MB of RAM in the computer, the swap file should be configured to something like 1536MB of RAM. 

Follow the steps  below to change your virtual memory.  If you have ample hard drive space then it's a good idea to go ahead and allocate this much space even if you have 512MB of RAM or less. That way it won't be necessary to remember to increase it should more RAM be added to the computer later.
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Windows XP users

To change the size of the virtual memory on Windows XP

1. Click on the Start button .
2. Right click on "My Computer" to bring up a small pop-up menu.
3. On this menu, click on "Properties" to bring up the System Properties window.

4. Click on Setting

5. In the Perfomance Options chose the Advance Tap

6. Click on change to change the virtual memory size.

7. Chose the Custom size option, and Enter the initial and Maximum size. Click on the Set button to apply.  Click OK to  close the Window.

8. Click Ok to close the Window.