... useful links about sculpting and diorama building
  http://www.paintingclinic.com - The sculpting part of the Paintclinic website.
  http://www.lyonstudio.com- lot of sculpting tips and tutorials of different sculptors.
  http://us.games-workshop.com/games/warhammer/painting/basicputty/default.htm - a Games Workshop website, how to use Greenstuff for repair and conversion of GW miniatures.
  http://www.heresyminiatures.com/ a not only a place to buy miniature ! Also fast delivery of fresh Greenstuff and sculpting tools !
  http://www.dragonforge.com/ - a site to buy sculpting tools. And some tutorials, i.e. building of bases
  http://www.jeffvalentstudios.com - another online shop to buy Greenstuff, sculpting tools and sculpting armatures !
  http://www.witchhunter.net/figurenmacher_steve_buddle_e.html interview and background information of Steve Buddle, the sculptor of some Blood Bowl miniatures. There are even more interview of different other sculptors.
  http://miniature-painting.net/Werner/werner.html - a interview and some background of Werner Klocke, a well known german sculptor.
  http://miniature-painting.net/StefanNiehues/stefan.html - a interview and some background of Stefan Niehues, another known german sculptor.
 

http://miniature-painting.net/SandraGarrity/sandra.html - Sandra Garrity, another professionell american female sculptor

  http://www.hirstarts.com/ - well, a kind of sculpting page. Bruce Hirst sells great molds for to cast your own dioramas and buildings. Perfect stuff for a homemade Dungeon Bowl :-)