Well as PD was having so much trouble getting one; I thought I should add a pack. This one is from this board software's site. It consists of 600 45x45 avatars from varying sources. I know they kind of suck (due to being tiny) so if anyone has any better sources (no anime pr0n, or kid cartoons please ), do not hesitate.
To view this gallery, goto your profile and select "Show Gallery" in your avatar settings.