Bitdefender Internet Security 2013 setup error: unable to install driver

Yesterday I tried to install Bitdefender Internet security 2013 . I get the following error during installation.
I am using Windows XP service pack 3. In my computer I am the only user.
Can someone please tell me how can I resolve this problem?

Setup was unable to install drivers on your system. The installation process cannot continue.
Try running the Setup program with administrator privileges.
