I just want to know how 
Windows 7 Home Basic Product Key can I format my laptop 
Windows 7 Pro Key, so that the only 
Office Ultimate 2007 thing remaining is the 
Office 2007 Ultimate Key itself, as if I have just bought 
Microsoft Office 2010. I don't have any Microsoft Office 2010 installation CD's, because 
Office Professional Plus 2010 Key came with the laptop, so how can I do that?