The Coordination Center for TLD .ru ,announced that the policy on .RU registration is changing starting April 1st,2010 .
From April 1st,2010 anyone who wants to register a domain name will have to submit some documentation.
For legal entities,a copy of the certificate that shows state registration issued by the state authority will be required.For both,entrepreneurs and natural person,a copy of passport will be required.
You can find more details here .