http://msdn.microsoft.com/en-us/library/aa197950%28v=sql.80%29.aspx
Script out your jobs first, all logins, backup history, DTS packages, linked servers, server-level permissions. Since you have no backups, there's no other solution here, that corruption's not repairable.
Afterwards check your IO subsystem and sort out a backup strategy
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability