Can't change files

[kncxv]

I'm using Vista Home Basic 32bit

When I try to move a folder I created or the files in it which I also created I receive the following:

You need permission to perform this action.

I am the administrator on this machine no one uses it but me. I can't move it or delete it or change it in any way without getting the above message. The file I'm working with is on my external drive. I have never come across a problem like this. Can anyone help me please?

Thank you

[Guest]

Can you post a screenshot as shown below of the permission tab on both the folder and the drive that it's on? Also, to where are you trying to move things to?

[Tripredacus]

There are a couple of reasons, one if the ownership like -X- suggests. Another annoying thing is that the protected file locations (windows\system32, program files, etc) even on other volumes will become protected.