Yes it can. You will need the activation code that came with the Office disk, so have it handy. 
I plan to do a Windows 7 Upgrade from Vista Basic / Inspiron 530. I have someone who will be helping and teaching me how to do a clean install. What I would like to know is if the CD for Microsoft Office Home & Student 2007, when I bought my DELL on Jan '08 it came with can still be used with Windows 7 when I get it installed. Thank you in advance, kdaten52
Windows 7 Upgrade from Vista Basic / Inspiron 530