The Seven New Domain Names:

• .info – For informational sites. Became operational Sept. 23, with more than 700,000 registered so far. Early problems with speculators jumping ahead of queue by claiming bogus trademark ownership. To rectify, operators of ".info" plan to refer as many as 10,000 registrations this week to arbitrators at the World Intellectual Property Organization.

• .biz – For businesses only. Became operational Oct. 1. Lawsuit challenged registration process, calling it illegal lottery. To address concerns, operators changed procedures for handling names for which more than one application was received. More than 500,000 names registered through mid-December.

• .name – Individuals can register a name in form of "firstname.lastname.name" for websites and "firstname(at)lastname.name" for e-mail addresses. About 60,000 names were to be activated Tuesday.

• .museum – Names for some museums were approved provisionally in November. Some names work now, but the suffix becomes formally operational in March. Names subdivided by location as in "sanfrancisco.museum" and type of museum as in "maritime.museum." Index available at http://index.museum.

• .aero – For aviation industry. Registration begins in March.

• .coop – For business cooperatives, such as credit unions and electric coops. Some preregistered names became active earlier this month. Regular registration begins Jan. 30.

• .pro – For professionals, initially doctors, lawyers and accountants. Individuals and companies requesting names must show proof. Details still being negotiated.