Funny - the one case where Windows IE is NOT vulnerable and other browsers (including my favorite, Safari) are. I guess there are benefits to not following standards, after all.
Of course, if you don't click on those "send-me-your-bank-number-so-we-can-verify-your-account" messages, you're better off, anyway.
Izzy,
Yes and no. If you install and IDN plugin for Internet explorer it is just as vulnerable. The solution of the firefox folks (turning it off) is similar to the MS solution.