Error moving SQL Server 2000 to SQL Server 2005 NOLOCK Error
The best online resource for database corruption in SQL Server world is Paul Randal's web page. He is our world's number one star in corruption matters. And that's because he wrote all dbcc check commands in SQL Server (and he's the only one who can understand them properly :-).
What I'd do in your place now would be to try the backup-restore method of moving the database to new SQL Server or try dbcc with repair option (not before making a backup of the database).
There is some good info also on MSDN about how to treat these errors. Check the article Troubleshooting DBCC error 2570 in SQL Server 2005.