Readonly Database - SQL Management Studio Express

I have database setup on one server using SQL 2005 now when I try to detach and attached that database on workstation with SQL Server Express 2005, it came up as Readonly message I get this message  when try to alter database.

Message is "Failed to Update databse "database name" because the database is read-only. (Microsoft SQL Server, Error: 3906)".

Server: Windows 2003, SQL 2005, Database compatibility level is SQL Server 2000 (80)

Workstation: Windows XP Professional, SQL Express 2005, Compatibility level SQL Server 2005 (90)

Note: I am not able to change the compatibility level on workstation because its readonly.

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Did you happen to attach from a CD?
Make sure the mdf file is not read-only
punjwaniAuthor Commented:
I checked both files mdf and ldf attributes are not Read-only.
Do the service accounts  have full permissions on the folder?

Have you tried:
sp_dboption 'table name', 'Read Only', 'False'

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punjwaniAuthor Commented:
I copied database in seprate folder on C drive, now I copied it in C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data and it worked.

Thanks I think it was permission issues, it resolve by copying it to default folder.
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Microsoft SQL Server 2005

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