Yes, this I already did of course. If I replace an icon, such as the kopete icon, that icon is replaced correctly. Other icons, instead, are not replaced. I was looking for a guide explaining how to deal with this things, but I can't find any. I found one guide on icons, but that doesn't explain this part. I see there are some icon themes on kde-look.org which replace the kopete_all_away icon, and it seems these themes have a icon with that name in the directories. The problem is that it is not working for me. I placed an icon with that name in the set, but kopete is not using that icon.