You can stop Windows XP from using the pagefile.sys file for SWAP memory however it is not typically recommended. Most suggestions on the Internet say that you should always make the pagefile 1.5 times the amount of physical memory you have in the Windows PC. It is also mentioned that you should have at least 1GB of memory if you are going to disable the Windows SWAP. Windows should not use SWAP (pagefile.sys) unless it has run out of RAM (memory) to use however I noticed on my PC that it appeared as though SWAP was being used after only 20% or so of my actual physical memory was being used so I decided to try disabling the SWAP and so far it has made most things faster on my PC.
To disable the Windows SWAP memory usage follow the below simple steps which will require a reboot at the end of configuration.