DICTC is handy DICT client for Win32. Use the DICT protocol (RFC2229) to access human language dictionary databases via the Internet.
This looks like a good beginning. Still, adding a new server is not very intuitive, and the window seems to be cut at the bottom. A few other features would be nice to have. The license is not included in the distribution, which is something you might want to fix. Why not use the local SVN and let others help develop the client? :-)