Hi,
For very attractive icons I advise you http://www.iconaholic.com/stock-icons.html
in case you need a different size I always use Photoshop a very handy utility to resize. In case you dont have Photoshop I have an image risizer which I would be able to supply you. How ever take care this utility is not as sophisticated as Photoshop. Anyway just search the Internet for nice images I will be able to resize (reduce) them for you to your requirements.

Regards,

Koen