Wings3D to Sandbox flash tutorials
From Platinum Arts Sandbox Free 3D Game Maker
First tutorial covers Uv mapping,exporting to a 3ds file and then coverting the 3ds to a md3 file format for loading in the game engine.
Second tutorial covers 3D texture painting in Tattoo 3d. ( I have put a link to Tattoo 3d in the forum post "Good free programs to use with Sandbox" under Tutorial/Resources
Third tutorial covers writing the md3.cfg file.
Fourth tutorial covers loading the finished md3 model into the game engine.
http://www.mediafire.com/file/ywtmlynz4zj/Wings3d.zip
http://www.mediafire.com/file/m3m3zojmgjy/Tattoo.zip