For a serious project I would indeed use Tk like about everyone else. But for a one-off for Windows, as much as, professionally, I puke blood while saying it, I would expect get a quick and dirty solution using (cringe) Visual Basic (...cowers in corner).

Update: Perhaps I should explain why. Whereas both Visual Basic and Tk are event driven, Tk doesn't have a form painter which creates start-up overheads that VB can initially avoid. A form painter gives initial benefits because of the stronger encapsulation of data, but VB, Centura and so on are unsuitable for serious projects because that same strongly visual encapsulation also means the code becomes decreasingly manageable over the longer term. Which is only not a problem if there is a fixed project lifetime of less than about a month.