Well. One of the best places to find general support and help is the great (not just big) community of Blender.

English ones: blender.org, blenderartists.org, blendernation.com

German one: blendpolis.de

Besides that all you need is a way to export in a way MED can read. You can use the mdl export script for example. Which can be found here when you scroll to the end:

http://user.schule.at/go/blender/

The script from Ventilator works great at least for static stuff. Haven't tested animations because i haven't found a way to import animation into Blender nor make animations in it. Maybe somebody else can say a word or two to it.