Thanks Tufenuf,

I did what you suggested and, on restarting the machine, as soon as the desktop appeared, the icons were already there.

An there was a new file IconCache.db 2065 Kb, created on 15/01/2010 at 16.03, but in the folder:

C:\Documents and Settings\Administrador\Configuración local\Datos de programa

Instead of:

C:\Documents and Settings\Administrador\Configuración local\Application Data


This is because I have the Spanish version of XP. Anyway before this, the file was not in either folder, as I searched for it in the entire drive.

Thanks again for your simple an effective solution.