The link is bad is should be Reaper Miniatures :: MiniaturesIf you want miniatures for Mouse Guard, Reaper is going to release a box of 10 Mouseling Heroes in July, followed by another box of NPC types in the near future and possibly a box of villains. Here are some previews:
Reaper Miniatures :: Miniatures
As I understand it there were some available at Reapercon 2010, but they sold out of the first batch in the morning of the first day.