Denver--KPNQwest, a European joint venture of Qwest Communications International, is planning to go public. The IPO will be offered throughout the U.S. and Europe, and its proceeds will be used to expand KPNQwest's European operations. KPNQwest, which was incorporated earlier this year in Amsterdam, Netherlands, is building an 8,100-mile Internet protocol-based network to serve b-to-b customers throughout 14 European business cities. The company provides business customers with Net-based integrated voice, data, image and video communications. KPNQwest has not set a date for its IPO.