|Virtual Memory is hard drive space made available only for memory use. It is temporary memory. |
It also known as your paging file.
By any chance did anyone change your XP virtual memory settings ?
(> = got to) > My Computer > System Properties > Advanced Tab > (Performance Options) > Advanced > you will see toward the bottom " Virtual Memory setting"
If its changed from "Allow windows to manage virtual memory" check mark allow windows.
If it is already check marked try increasing it a bit at a time until the error message stops.