Unable to open a CS file in CS4 After Computer Crash

Question

Can anyone offer any help.
I was using my computer with my indesign CS files open, when the graphics card broke on the motherboard - I now have removed the Disk Drive and have it in a cradle attached to a new computer.
Trouble is I can not open the files on my new comp on CS4 - it states "The file is already open by another user or application, the file may be stored on a network server and can not be used until the user closes it"
I have made sure that all files on the old drive are available via the security tab to the new machine - I have also made sure each individual file is able to be used by the new comp.
It seems that the file is in use and I do not know how to resolve it. I have found references to the fact the file may be locked in the preference file but I do not seem able to locate it in a satisfactory way (if thats in fact the problem)
Its probably complicated as the crash occured on the other drive not the main drive where the CS4 software is located
Can anyone offer any advice?
Many thanks

Answer 1

ACTUALLY HERE IS THE FULL PROCESS:
Prerequisites
Log on as an administratorYou must be logged on to Windows as an administrator in order to change security permissions for a file or a folder. If the computer is your personal computer, you are likely already logged on with an administrator account. If the computer is part of a network at work, you might have to ask the system administrator for help. To verify that you are logged on to Windows with a user account that is a computer administrator, visit the following Microsoft Web site:
http://support.microsoft.com/gp/admin
Start Windows XP Home Edition in safe modeIf you are running Windows XP Home Edition, you must start the computer in safe mode, and then log on with an account that has administrative rights in order to access the Security tab. Access to the Security tab is required in order to change security permission. If you are running Windows XP Professional, you do not have to start the computer in safe mode. For more information about how to start Windows XP in safe mode, click the following article number to view the article in the Microsoft Knowledge Base:
304449  How to start the System Restore tool at a command prompt in Windows XP
Disable Simple File Sharing in Windows XP ProfessionalIf you are using Windows XP Professional, you must disable Simple File Sharing. By default, Windows XP Professional uses Simple File Sharing when it is not joined to a domain. For additional information about how to do this, click the following article number to view the article in the Microsoft Knowledge Base:
307874  How to disable simplified sharing and set permissions on a shared folder in Windows XP
To take ownership of a file or a folder
How to take ownership of a fileYou must have ownership of a protected file in order to access it. If another user has restricted access and you are the computer administrator, you can access the file by taking ownership.  
To take ownership of a file, follow these steps:
Right-click the file that you want to take ownership of, and then click Properties.
Click the Security tab, and then click OK on the Security message (if one appears).
Click Advanced, and then click the Owner tab.
In the Name list, click Administrator, or click the Administrators group, and then click OK.
The administrator or the administrators group now owns the file.
To change the permissions on the file that you now own, follow these steps:
Click Add.
In the Enter the object names to select (examples) list, type the user or group account that you want to have access to the file. For example, type Administrator.
Click OK.
In the Group or user names list, click the account that you want, and then select the check boxes of the permissions that you want to assign that user.
When you are finished assigning permissions, click OK.
You can now access the file.