I just want to know how 
windows 7 activation key can I format my laptop 
windows 7 64 bit, so that the only 
Office 2007 Professional thing remaining is the 
Office 2007 itself, as if I have just bought 
Office 2010 Standard. I don't have any Microsoft Office 2010 installation CD's, because 
Office 2010 Product Key came with the laptop, so how can I do that?