You can configure your PC's virtual memory by these steps.
Right click on My Computer > left click on Properties > Advanced > Settings > Advanced. Under Virtual memory left click on Change.
Select (left click) on the Drive on wich Windows XP is installed. In most cases this will be Drive C.
Select ''No Page file''.
Left click on OK, OK, OK, ignoring any warning messages regarding no page file/virtual memory.
Restart the computer.
Recreate the page file. If the computer seems to become unstable while setting the new page file, again, restart the computer and perform the process in Safe Mode.
Space available: Select the radio button labeled: Custom size:
To play it safe, in both the Initial (MB)size: and Maximun size: dialogue boxes type the maximum desired virtual memory/page file size (in MB's) provided you have the free memory space to spare. If you don't have enough free memory available enter the amount of memory you can spare, and meanwhile seriously consider getting a larger Hard Drive.
Mine is set to 4096MB (4GB), max. allowed by XP. This may seem like quite a lot (and probably is), but the reason for this is that recent programs/games now require a lot more RAM and virtual memory to function efficiently. This can also hold true when many processes\programs are running simultaniousely.
Some say that Virtual memory should be 1.5 or 2.5 times the size of RAM. This is just a general rule of thumb. Perhaps just doubling or tripling your current VM size will be adaquate. Having a larger pagefile size does not hurt performance, it only takes up a bit of additional disk space.
After setting the new page file size left click on
OK > OK > OK. Then restart the computer.