My XP OS not working

Hello, my name is aji_agito...

One months ago I bought Toshiba notebook...My notebook specification is Toshiba Satellite A105 S4384...
when I bought this notebook unfortunately I don't follow the installation that supervisor did and I don't know that they have installed OS vista in my notebook...

When first I used my notebook I realized that in my notebook has been installed OS win Vista...So, I decide to remove Vista and replaced it with Windows XP Sp II but when I finished my installation I'm so confused because the driver software for my notebook specification just available for Vista OS when I tried to download them in Toshiba Homepage....I just find Sound, Wireless,and VGA (Nvidia) Driver for windows but for Vista I can download all driver I need...

So what I should do?????....I don't know how to restore or reinstall Vista to my notebook and I can't find the driver software for windows XP OS....Please help me.... It's so urgent.....