One of the most painful and frustrating IETF efforts. Over, at last. As soon as registries and registrars accept it, you will be able to register (but not to use, not right now) domain names in Unicode.
RFC 3490 : Internationalizing Domain Names in Applications (IDNA) RFC 3491 : Nameprep: A Stringprep Profile for Internationalized Domain Names (IDN) RFC 3492 : Punycode: A Bootstring encoding of Unicode for Internationalized Domain Names in Applications (IDNA)
