Helping people with computers... one answer at a time.
Available Virtual Memory is controlled by a setting you can adjust. If you're constantly running low, you should look at what you're running.
My PC tells me I don't have enough virtual memory. What do I need to do to get more?
The amount of virtual memory your computer has available is controlled by a simple setting.
You didn't indicate what operating system you are running. On Windows XP, look in Control Panel: System, Advanced, Performance, Settings, Advanced, Virtual Memory. I believe it's in a similar location in other versions of Windows.
IMPORTANT: usually running out of virtual memory means that you are running too many programs at the same time for your system or one of them is attempting to use too much memory. You might also want to check out what's running when this happens and how much memory each program is using.