Where do designers get images of lets say a family for a dental or insurance site, or a hign quality image of a attractive woman smiling, that sort of stuff.
You can obtain these from several stock photo sites. http://www.sxc.hu/ provides most of their photos free of charge, but you do need to give credit for the photos that you put on your site somewhere. You can also use http://www.istockphoto.com/ which is very reasonably priced and you buy the rights for these images so no credit required.
Hi!
I use this site more than 6 months .. free pictures
There you will find everything what you need ..
all pictures are totally free for commercial and noncommercial use