Как я понял, sp_attach_single_file_db тоже не помог.
Тогда есть такое решение, найденное в английской конфе:

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If you only have mdf file (no tran log file) and you want to retore
database. Follow the steps below.

Suppose your .mdf file which you want to restore is in directory
d:\test.
for example d:\test\old.mdf

Open Sql Enterprise Manager

1. Create a new database, name it 'dbMagic'.
2. In the data files tab, change file name to 'newData.mdf', change the file
directory to 'd:\test. Note down the data file name
3. In the Transaction Log tab, change file name to 'newLog.mdf', change the
file
directory to 'd:\test'. Note down the transaction log file name
4. Click ok
5. Stop the Sql Server
6. Browse to the directory 'd:\test'.
7. Delete the file 'newData.mdf'
8. Delete the file 'newLog.log'.
9. Rename the 'old.mdf' to 'newData.mdf'
10. Start the sql server service and refresh the server.
11. The staus of 'dbMagic' will change to 'Suspect'.
12. Execute the following query and make sure that you see a listing
for dbMagic in the records returned by the query.

'Select * from sysdatabases'

13. if you see a record for dbMagic in the records returned follow the
steps listed below and if you dont, mail me at vikas_tyagi@hotmail.com
14. In Query Analyzer execute the following Commands.

EXEC sp_detach_db @dbname = 'dbMagic'

EXEC sp_attach_single_file_db @dbname = 'dbMagic',
@physname = 'd:\newData.mdf'

14. Go to the Enterprise Manager, right click on Database and Refresh
it.
15. You will see dbMagic in normal mode.
16. Rejoice.



Let me know if it helps...
Vikas Tyagi
vikas_tyagi@hotmail.com