2005/2008 it would be something like this: -

SELECT a.principal_id, a.name, OBJECT_NAME(b.major_id) AS [object], b.[permission_name], b.state_desc

FROM sys.database_principals a

LEFT OUTER JOIN sys.database_permissions b ON a.principal_id = b.grantee_principal_id

WHERE a.name = 'public';

You'd need to look up the mappings to 2000 to figure out an equivalent there --> http://msdn.microsoft.com/en-us/library/ms187997.aspx%5B/url%5D