I do care about data, yes. it doesn't seem to be possible to switch languages. when I run the compatibility test beforehand, I get a message that says upgrade cannot be done becuz of different languages. are you saying I can choose languages when I do a clean install?
good question freak. I bought my pc here in spain and with it got ME in spanish. wanted a language I master better so a friend put ME on instead, in english. then I bought XP in Denmark in danish (cuz I'm danish) . realize now, dont work!