Will the Windows 7 Ultimate upgrade work for computers with Mac software?

[QCEdward]

Hi, i really need some windows 7 32 bit help here. I am starting to work Windows 7 Starter for sunlife financial tomorrow and need my Office Ultimate 2007 Key to run Office 2007 for their software. Currently i have Office 2007 Enterprise Key installed. I want to know if I can split my hard drive and when computer boots I can choose xp or windows 7. So I can use xp for work and Office 2010 Activation Key for home. Since i don't have the cd for Office Professional Plus 2010 I don't want to remove it completely. Any suggestions and help would be appreciated!