Partnership with portals/sites

we are looking for a long-term partnership with portals/sites to advertise a new portal. The italian version of the site is already working and having good results (12.000 visits just in the last weekend!) The partnership may consist in: - co-marketing operations and/or integration - banner exchange - banner placing (against payment or on lead basis) Please note that we are particulary interested in sites/portals located in Eastern Europe but we don't exclude any other country! Waiting to start deals with any of you interested! Regards!