How to install windows 7 before finishing the installation of windows xp?
 

Hi i tried installing Microsoft Office Enterprise 2007 but i cant find my serial and every Microsoft Office Professional Plus 2007 Activation Key i boot up the computer it Microsoft Office 2007 Pro Plus Activation Key straight to the setup screen. I have a windows 7 Office 2007 Professional Activation with a serial and i want Microsoft Office 2007 Professional Plus Serial install it but how can i get to the setup of windows 7?