ok when i reinstall windows xp do i nee d the disc coz with the ccomputer i got i didnt gget a xp instalation disc n i bought da computer for £999

Call the vendor who sold you the PC and request the installation media - if they sold it to you with Windows installed then you should have been given installation media and a product key or else they may be pirating software...if that is the case then call the police. You can also look on the computer itself for a Certificate of Authenticity (COA) - if you have a COA note the product key and then borrow the install media/key from a friend to install Windows...you'll have to call Microsoft to register Windows with your COA or else you're breaking the law and putting both you and your friend at risk. Otherwise you're going to have to buy a licensed copy of Windows.

Here is the driver for Nvidia http://www.nvidia.com/content/drivers/drivers.asp
In case you need it ...