Folder not displayed in Windows Explorer

I have a new notebook with Windows XP Media Center Edition SP2.

I have a folder called "HP Notebook" under the C drive that I created
last week and used to contain certain files from my old notebook
restored from an external HD using Windows Backup utility. Everything
worked fine last week.

I decided to delete everything under this folder and restore every
users documents and settings from the external HD (no system stuff).
The backup utility seemed to work OK and said it completed 14,000+
files.

When I looked for C:\HP Notebook using Windows Explorer, it was not
visible. However, if I search for a file that I know exists, the
results show "C:\HP Notebook\...directory path
further...\searchedfilename".

In Control Panel, I think I have everything set to display all folders
regardless of what they are (Hidden, System, etc.).

I'd like to delete this "hidden" folder. Can someone help?

Thanks,
Mike