It looks like you can only go to Home Premium or ultimate so would need the two step process of going to Windows Home Premium and then to Pro. I don't know what the difference in cost would be.
I currently have windows vista home premium on my laptop, but i would like to upgrade to windows 7 professional. My school offers software through the MSDNAA. I can get windows vista business through them, as well as windows 7 professional. But, do i have to upgrade to vista business before goint to 7 pro? I read that on the windows website. Also, i'd much rather do the upgrade than the custom/clean install of windows 7. So, do I have the right method of upgrading to pro? Can I upgrade to business and then upgrade to windows 7 professional? Any other suggestions?