backup - Restore data from one Windows edition to another

I have a Swedish Windows 7 Home Premium on my PC, and I really want to change system language to English. I know that Home Premium can't change system language (only W7 Ultimate does that), so I consider buying an English version and make a clean install. However I do have many settings, programs etc that I don't want to lose.
I therefore have two questions:

1. Can I take a backup of my Swedish W7 Home Premium, install the English W7 Home Premium and then restore everything back to normal, except the system language is now English?


2. Can I take a backup of my Swedish W7 Home Premium, install W7 Ultimate and then restore everything back to normal (now with the option to change system language)?

Thanks!