I the upgrade only for Office 2007 Keygen tomorrow and need my laptop to run Windows 7 Home Premium Activation Key for their software. Currently i have Office Home And Business 2010 32 Bit installed. I want to know if I can split my hard drive and when computer boots I can choose xp or Office Home And Business 2010 Serial Key. So I can use xp for work and windows 7 for home. Since i don't have the cd for Windows 7 Pro 64bit I don't want to remove it completely. Any suggestions and help would be appreciated!