Originally Posted by Gen2ly
I know it is really late to be joining, but tried your tuto and got some errors; found a way around it and I'm posting it in order to help others.
This is the instruction that gave me problems and also the key to converting all the files:
The easy way is to open the terminal in the folder where you have your icons,
icotool -x --palette-size=0 -o /home/user/Desktop/seperate-directory *.ico
Reboot your pc, and then open said folder and right click on an empty space inside it; open terminal here
(sudo apt-get install nautilus-open-terminal)
And presto! now all you have to do is use them.
eduardo@eduardo-desktop:~/Escritorio/Alienware Breed$ icotool -x -o . *.ico