Hi,
Most of these "secret" hidden files are Spyware/Advertising files, coming into the computer from the web while online.
The ccleaner suggested by another is very, very good. Here are some programs and suggested method of using them, if you don't already have them:
If you think you already have Spyware/Advertising Ware in your computer, run these as follows:
AdAware at:
http://www.lavasoftusa.com
Download: AdAware_SE V 1.06
SpyBot Search & Destroy V 1.4
http://www.spybot.info/en/download/index.html
CWShredder at:
http://www.trendmicro.com/cwshredder/
Click on the "Remove CoolWeb Search" button to download
All of the above programs run better and much faster when run in SafeMode.
To get into SafeMode:
Re-boot the computer, and immediately after starting up, Press and hold down, F8, at top of keypad.
When the options show on the screen, use the up and down arrow keys on the keyboard to select
"Safe Mode".
Press Enter
It's best to run the AdAware scan first; 3 times; then re-boot.
Then, run the AdAware scan again 3 times. Then, run SpyBot, and then CWShredder.
Re- Boot.
Reason for running so many times:
Some of these trojans' files can be deleted the first time; leaving some others; but on re-boot, they re-write the files that were deleted.
Running multiple times deletes most of it the first
Time.
If you wish to have a great program, after you clean out Spyware/Advertising Ware:
This program stops this stuff from getting into the computer in the first place, by placing URL's in the browser, stopping them instantly. One of the Very Best free programs anyone can download! Updates of AntiSpyware Definitions are available on almost a weekly basis.
SpyWare Blaster 3.4
http://www.javacoolsoftware.com/sbdownload.html
Free online scan at:
http://www.trendmicro.com/spyware-scan/
I do wish you the best, Mort, and none of the above programs contain any Spyware files themselves.