Error when attaching SQL2000 Database to SQL2005 Instance

Hi,

I haven't been able to find any good information about what to do with this situation.  I have a SQL 2000 database that I copied to a machine that has SQL 2005 on it.  I received an error when I attached it.  I then tried to restore it from .mtf backup... similar error.  It is as follows:

TITLE: Microsoft SQL Server Management Studio
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Restore failed for Server '<SERVERNAME>'.  (Microsoft.SqlServer.Smo)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.3042.00&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Restore+Server&LinkId=20476

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ADDITIONAL INFORMATION:

An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)

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Possible schema corruption. Run DBCC CHECKCATALOG. (Microsoft SQL Server, Error: 211)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=211&LinkId=20476

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BUTTONS:

OK
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Does anyone have any suggestions on what to do from here?  At this point I can't even detach it, since it appears to be replicated.  I cannot access the database in order to turn off replication.

Any input would be greatly appreciated.

Thanks!