With a Gig of RAM I am very surprised that you're having virtual memory isses! Virtual memory is when your computer uses the hard drives as a temporary place to store things that should be going into RAM but there's not enough space for them. How many windows do you have open and what type of programs are they? I'm pondering where the memory hog is on your computer. LOL
When you start having these issues you might want to pop open the Windows Task Manager (CRTL+ALT+DELETE) and click on the Processes tab. You can sort the processes by the Memory Usage and see what apps are hogging the memory for you.
Sorry I don't have a silver bullet for you.
