Troubles with add/remove programs

Hi all. I have this issue with add remove programs, some of the program's icons pop us as the generic file folder icon. I don't know why this is, but I am trying to figure out how to fix the little errors that seem to accumulate with windows, without having to catastrophically reinstall everything. Currently this has happened to:

Adobe reader
Directx SDK update
Omnipage (a letter recognition program for my scanner)

So is there a particular file that handles this, or is it like an individual icon file?
This problem seems to occur, eventually with every windows install that I have had.

Download and install the TweakUI Powertoy from MS here...

http://www.microsoft.com/windowsxp/pro/downloads/powertoys.asp

Open TweakUI --> Repair --> Select "Rebuild Icons" --> "Repair Now" button.

Sorry I guess that I should have said I am running Win2k sp4. It wont install.

For W2K you'll need to use the older v 1.33 of Tweak UI, which you can find here...

http://www.microsoft.com/ntworkstation/downloads/PowerToys/Networking/NTTweakUI.asp

Edit: You may also want to increase the size of the Icon Cache. You can find a Registry edit to do just that here...

Increase Icon Cache... Line 121
http://www.kellys-korner-xp.com/xp_tweaks.htm

Thank you, it seems like a very handy program, however it did not work for me. I do know that all of these programs are currently installed, and fully functional.

You could try recreating the cache file. Open the command prompt (Start | Run | Type cmd, and click OK | CD to the %systemroot% (C:\WINNT) directory, and type the following commands (hitting ENTER after each)...

attrib -h shelliconcache
del shelliconcache
exit

... then log off, and log back in. If the icons still don't show correctly, try rebuilding the icons again using Tweak UI.

I did all of that, it still doesn't work. IDK, maybe if I uninstall all those progs it would work, but I am not willing to do that. Thanks for the input though.