1.Go to"My Computer" 2.simply Right Click on My Computer Icon 3.Now on right click menu that appears Left Click on Property 4.Now new windows will pop up here. if you are using XP then goto Advanced Tab and if you are using Higher Version then Goto Advanced System Setting option on the right in the window that appeared and then Goto Advanced Tab of the next window. 5.here you can see number of Setting Button, click the setting button which is under performance section 6.now in the window that appeared Goto Advanced Tab 7.now in Virtual Memory Section you can see the currently allocated space and if you feel it is not present or used in less amount then click on the change button and increase the value in the window that appears.example=initial size 2000 maximum size=4000 set it to [2046] [4092] and ok.....this trick also speed up ur pc