Wanna increase your system Speed by configuring your hardware

1). Start any application, say Word. and Open some large documents.

2). Press CTRL+SHIFT+ESC to open Windows Task Manager and click Processes tab and sort 

   the list in   descending order on Memory Usage. You will notice that WINWORD.EXE will 

  be somewhere at the top, using multiple MBs of memory.

3). Now switch to Word and simply minimize it. (Don't use the Minimize All Windows

     option of the task bar).

4). Now go back to the Windows Task Manager and see where WINWORD.EXE is listed.
    Most probably you will not find it at the top. You will typically have to scroll to the 

    bottom of the list to find Word. Now check out the amount of RAM it is using. 

    Surprised?   The memory utilization has reduced by a huge amount.



5). Minimize each application that you are currently not working on by clicking on the

   Minimize button & you  can increase
   the amount of available RAM by a substantial margin. Depending upon the number and 

   type of applications you use together,
   the difference can be as much as 50 percent of extra RAM.

   In any multitasking system, minimizing an application means that it won't be utilized by  

    the user right now. Therefore the OS automatically makes the application use virtual  

    memory & keeps bare minimum amounts of the code in physical RAM.

  So, my personal advice would be that,if you are going to upgrade your RAM to next level 

  try to upgrage it minimum up of 3GB ram, and also add some good graphic card of NVIDIA

  or ATI , whichever Supported.