It should be possible for you to use both the DVI and the VGA outputs for two additional monitors - in addition to your laptop's screen - giving you a total of 3 monitors.
Since your laptop is running Windows XP, it would just be as simple as connecting up the third monitor to the VGA port. Then, open your Display properties and go to the 'Settings' tab (where you set up monitor resolution and so on). In there, you will see a third monitor icon, which is greyed out - select it, choose the option to extend your desktop to that monitor, and then set the appropriate resolution.
Let me know how you get on,
-Matt