How we can change ( update ) the virtual memory for the application ?

Answer 1

You go to Start Menu.
Control Panel.
System.
And then click on the Advanced Tab.
Under Performance there is a settings tab.

You can increase your virtual memory there, but I wouldnt touch it because it usually allocates it the best way possible so that your computer and your graphics card gets the most from your memory.
It usually means you might need to upgrade your memory. Go to control panel again, then system, and then check your computer information and see how much memory you have. If you only have 128MB RAM, which is the standard that new computers come in, then you might need to add more RAM.
The more the RAM, the better performance of your computer. If you only have 128MB RAM then that basically means that you cant have much more than maybe 3 or 4 programs opened at the same time.
If you need more help or if you want instructions on how to install more memory, then contact me in my profile.