I have made an animated standard ICQ 6.0 emoticons/smiley pack for Pidgin. This smiley theme is compatible with the standard smiley theme in ICQ 6.0/6.5.
To add this theme you must click in the main window onto Tools -> Preferences -> Smiley Themes. Now you can drag the file onto the list or click the "Add" button, navigate to the file and click "Open".
The theme that you would like to use must be selected.
Your conversational partner should also use the same theme, so that he can see the same smileys.
Have fun! :-)