GICONS FAQ
See: http://black.inforis.ru/tvsoft/desktop.ws?f=gicons/FAQ

INSTALLER ASKS TO INSERT EXTERNAL DISK.
Check path to directory where your unpacked files are placed. It may have
long file name . Standard Windows-9X installer (which is used for
installing of system drivers) is still 16-bit and doesn't understand long
file names. Move files into directory with short (DOS-compatible) path, for
example "c:\temp".

I DON'T SEE ICONS AFTER INSTALLATION.
Probably, you have installed some image viewer/editor software, for example
acdsee.exe after installation of GIcons. Image software often changes file
type associations. Just reinstall GIcons registry settings (see later).

WHERE GICONS FILES RESIDES?
There are only two files: gicons.dll and gicons.inf . There are copied
during installation into Windows/system/ShellExt or WinNT/System32/ShellExt.

HOW TO REINSTALL REGISTRY SETTINGS?
Enter directory (see above), select gicons.inf and select "Install" in file
local popup menu. You may install/uninstall registry settings from command
line:
rundll32.exe gicons.dll,Install 
or 
rundll32.exe gicons.dll,Uninstall 
This is a way to enable/disable shell extension.

HOW CAN I EDIT REGISTRY TO DELETE ICON HANDLER FOR SOME TYPE OF FILE ?
Open HKEY_CLASSES_ROOT in regedit.exe Each file extension has a key, for
example .gif Open it and see <default> value. It may be, for example
giffile . Look at giffile key under HKEY_CLASSES_ROOT : It must have a
structure like this: 

giffile 
  DefaultIcon 
  shellext 
    IconHandler 
    PropertySheetHandlers 
      PreviewPage 

Note that shell caches icons, so you may not see
differences at the first time. You may be sure that all is OK by selecting
any icons and pushing "F5" (refresh). Icons must be changed. Be careful by
editing registry!

WHY SO LONG ?
Decoding GIF and JPEG isn't a very fast process. It may take a lot of time
for large directory. See next question.

WHAT IS ALLICONS.DAT ?
Program caches decoded icons in ALLICONS.DAT file. This accelerates loading
icons next time.

MAY I DELETE ALLICONS.DAT ?
You may delete it, but the shell extension will create it again.

HOW TO REFRESH ICON ?
There is no way to refresh icon just now. Delete ALLICONS.DAT, select image
and press "F5". It will inform windows to recall shell extension for this
image.

WHY DO NOT USE SINGLE CACHE FOR ALL DIRECTORIES ?
You may copy ALLICONS.DAT together with you files to other directory, write
it on CDROM etc. It will accelerate opening directory and avoid icon
extracting.

HOW TO CHANGE SIZE OF THUMBNAILS ?
These aren't thumbnails, these are system icons. Windows has fixed size for
all icons. So I can't control it. You may select "Use Large Icons" in
"Plus!" tab of "Display property". It will increase icon size to 48x48
instead of 32x32.

I DON'T LIKE IT...
I can recommend you to look for something else, for example visit 
www.acdsys.com .
Do you know that new Windows shell (known as Active
Desktop) has built-in thumbnail feature. Select directory properties and
check "Enable Thumbnail View" on. Then enter to the directory and select
"Thumbnails" as directory view style.

