When Sirena Carroll gets going about Harry Potter, go ahead and call the giddy patrol. The 18-year-old's voice rises and quickens as she describes her all-night reading binges, her favorite scenes from the series, her life-size cardboard cutout of Harry, her wizard-themed Halloween costumes and her request (denied by her parents) to legally change her name to Hermione.

Eventually, like someone unable to keep a secret, she bursts into a spot-on impression of Emma Watson, the young British actress who has played Hermione in the movie adaptations of the first three books.
``If I can't even get a feather to rise off a desk with a simple spell, then I can't say that I'm good at everything!'' Carroll says in her best Oxford drip.

Then, Sirena again, she says, ``I can't wait for the sixth book. If it takes (Rowling) too long; I'm going to have to go after her.''

Like many FOPs (Fans of Potter), Carroll, who attends high school in Westchester County, survives the long gaps in between installments by rereading what's already out. A quick look at the numbers: ``Sorcerer's Stone'' she's read 20 times. ``Chamber of Secrets,'' six times. ``Prisoner of Azkaban,'' 12 times. ``Goblet of Fire,'' eight times. ``Order of the Phoenix,'' two times and counting. That's a lot of Hogwarts, and considering that Carroll's read it all in Braille, it's even more than it seems. Typically, one page of single-spaced print translates into two or three pages of Braille. ``Harry Potter and the Order of the Phoenix,'' the fifth installment of the series, consists of 13 volumes in Braille. On the shelf, the book is almost 2 feet wide.