Customer: I would like to purchase Windows Vista.
Helpdesk: No problem, em. Which one would you like?
Customer: What is there?
Helpdesk: Vista Home basic, Vista Home Basic upgrade, Vista Home Premium, Vista Home Premium Upgrade,
Vista Bussiness full version or the upgrade, Vista Enterprise or Enterprise Upgrade, Vista 32 bit or 64 bit for
System builders, Vista Ultimate Limited numbered signature edition.
Customer: whoa! Which one do you recommend?
Helpdesk: Mac os x.