How can I use a USB pen to format my ASUS E

Hello,
How can I use my Install XP From USB Drive Toolkit (Perfect for Asus EEE) to Format my ASUS Eee pc 701?
it has a virus on it that is really bad, and does not boot to windows. it makes the screen go's off and on.
someone please help me, I don't know where to start from..... Help!!!!