You can increase Windows XP's system performance by disabling different visual effects, such as: fade or slide menus, visual effects on buttons, slide open boxes, etc..

    * Right-click on My Computer, and select Properties.
    * Click the Advanced tab.
    * In the Performance section, press the Settings button.

From here you can adjust the performance by turning on and off individual visual effects, or by using pre-defined configurations by selecting one of the radio buttons.