I'm working on this and would like some further help.
I converted my .ico files into .png into 20x20, 32x32, 48x48 and 64x64 sizes.
I used the "disPHP" tool that you (Leo) mentioned earlier to have different.xml files depending on the size of the set.
Now, I have to concatenate the 20x20 and 32x32 .xml files together to have a Small set and 48x48 and 64x64 for a Large set, right? And then rename these to .dis to have a Dopus icon set file?
Actually, I should have asked first this: do I have to create multiple .png formats or a 20x20 set would suffice?
Thanks for the help and patience.