In need of help...

I have an external hard drive containing all MP4 files from a project which I will now be working with on Vegas 9.

In order to avoid any embarrassing mistakes concerning these files, I decided to change the security configurations of the drive - just while I'll be working with it - so that no files are accidentally moved, deleted, altered... from the drive.

To do this I went to MY COMPUTER > then right-clicked the drive and selected PROPERTIES > clicked the SECURITY tab > selected ADMINISTRATOR under users, then under permissions for administrators I selected ALLOW for READ & EXECUTE. So currently the security settings are as follows:

Full Control - NOTHING CHECKED
Modify - NOTHING CHECKED
Read & Execute - ALLOW
List Folder Contents - ALLOW
Read - ALLOW
Write - DENY
Special Permissions - DENY

After doing this, it dawned on me that Vegas will need to write the .sfk files onto the disk. I tried to change back the security settings to how they were, but it seems I don't have access now to the settings. They are grayed out. I can't figure out how to change it back to how it was.

Can anyone help please? .... I'm kinda stuck till I figure this out.

Thanks!

I thought I had solved it. But not.
I managed to have access to permissions on the disk and check ALLOW FULL CONTROL which basically place check marks in ALLOW in everything.


So I checked... I tried creating a new empty folder in one of the folders on the disk - it worked! Then tried making a change to the name of one of the folders on the disk and got an error - ACCESS DENIED.

So I guess I haven't figured it out yet. Somehow I managed to have full access to the disk, but not to the folders and subfolders and files that are on it.

Any ideas?


PROBLEM SOLVED
in case anyone runs into a similar problem... the trick is to change ownership of the folders
here's the link to the page that helped me:
How to take ownership of a file or a folder in Windows XP (http://support.microsoft.com/kb/308421)