Alejandro:
Check this site:
http://quadrone.org/graphics/

This is the BEST icons themes for Mozilla Firefox and Mozilla Thunderbird.
Works 100% in Windows.
Cick in PNG and icons files, you'll find all icons in "normal", "hover" and "disbled" status.



>Hi,
>
>I am writing a small giveway app and need some cool, colorful icons for New File, Add Item, Delete Item, Print, Preview, Backup (or Save). Can anyone point me to a free or inexpensive icon site, please.
>
>Do I have to worry that an icon may bring virus or spyware in it?
>
>TIA,
>
>Alex