I don't know what a "Windows user Interface" is. I do know that my Vista is extremely user unfriendly. Virtually everything takes more steps and is less intuitively obvious than my Windows NT. I wish that I had never down-graded to Vista.
How did they do that? Nothing is intuitively obvious on Microsoft products. I get so tired of having to look at almost useless help files to do simple ordinary things with their programs. Nothing extraordinary.