The prompts are meant to protect system locations (such as program files
and c:\) from non-administrative access.
You should not be experiencing any prompting when accessing files inside
of your user folder (such as Documents, Pictures, etc) or folders that
you have created in Windows Vista.
You may have to go through a prompt to access folders or files from
other hard drives.
You can change the security settings on folders and files to stop them
from prompting, but you should only do this on folders that you created
or only contain files that you will create, you should never do that on
Can you be more specific as to what version of Windows Vista you have
and what locations are prompting you for permission?
Microsoft MVP - Windows Shell/User
Windows Vista Support FAQ - http://www.jimmah.com/vista/