open ssms >> add sql 2000 server there >> open sql 200 server and open publisher /distributor / subscription properties there in security tab use proper sql authentication to to connect to all these sql servers....if once this is working do R&D for windows authentication by changing one by one...
remember all in ssms 2005 not sql 2000 enterprise manager
Prakash Heda
Lead DBA Team - www.sqlfeatures.com
Video sessions on Performance Tuning and SQL 2012 HA