viritual memory is RAM..

virtual memory is not ram.

Virtual memory is the space allotted for your hard drive to queue tasks for your ram to move on to and it helps locate bits of your ram that are not being used and it allocates them tasks witch your computer is preparing to perform. RAM is Random access memory for those of you who don't know. Virtual memory is a way for your computer to basically give your ram better performance by optimizing its ability to perform tasks. essentially when your computer is using its ram, witch it is at all times it sort of fragments its overall performance, virtual memory just takes those little fragments of unused memory and puts them together working on something else.

You can adjust your virtual memory by going to Control Panel: System, Advanced, Performance, Settings, Advanced, Virtual Memory. How ever generally when you are running in to this problem it is because you have to much going on at one time for the amount of ram you have.

you can either buy some more ram, for most boards its incredibly cheap right now. 2gigs for about 40-60 bucks or you can close a lot of the back round tasks running on your computer.
If you need help installing the ram or shutting down back round stuff just let me know I'll try to guide you through it.