Optimization for small RAM < 384 mb

Disable Prefetch :
1. Click Start then Run
2. Click Regedit Then Ok
3. Go To HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Session Manager\Memory Management\PrefetchParameters\
4. EnablePrefetcher Then set value to zero "0"
5. Reb00t Your System

Taken From : http://www.indonesiaindonesia.com/f/17764-trick-windows-xp/