You may know that Windows XP is not the best operating system in memory management. Many times you need to reboot your pc, just to clean the memory. Of course there is a simpler way to do this by creating a shortcut. Here is what you have to do:

1. Right click on desktop, New -> Shortcut
2. Copy/paste this piece of code in the location box: %windir%\system32\rundll32.exe advapi32.dll,ProcessIdleTasks
3. Save the file
4. You are done! Now every time you need some memory double click on your newly created shortcut

In case you are bored to create the file, or you just don’t understand exactly what I write, just download the Memory cleaner from here (right click->Save As).