If u are running windows xp right click on "my computer"
and select the "advanced" tab then in the "Performance"
at top select "settings" and in the window that comes up select
"advanced" goto the "Virtual Memory" bit at bottom click
"change" and change the "initial" size to "1536" and the "maximum"
size to "4095" and click "set" close windows selecting "apply" as u
go and restart windows and then try it .