Virtual memory an operating system's way of extending your physical memory (RAM) by use of a small portion of your hard drive. You should not go over the maximum limit of what your OS says is the most virtual memory you can have. Virtual memory helps, but is not a substitute for more physical memory. Therefore, buy more RAM. Simple as that.
Whenever you have programs open, they all have there own allocated space in memory and their own allocated time for processor use, as well as use of other system resources. So the more programs you have running, the less free, or useable space you have in memory. Your operating system then creates page files in your virtual memory to make up for the lack of free space in memory. Those pages are then swapped out into memory ever time they are needed for a particular program. If you don't have a lot of memory, then those page files are constantly swapping back and forth and your computer starts what is called "thrashing." But thats another topic. So virtual memory holds the page files for your programs but they still use memory and have more virtual memory won't necessarily help you. The only real solution is to buy more RAM.
You didn't want any of that, but i rambled anyway. lol.
