Spring RTS Engine

keeping up to my usual good form on forums I ask the question having wasted 2hrs trying to hunt down the info then post and find the answer....sigh sry to trouble everyone:)

Is there a source of info somewere on the file format required by spring for models. ie Ive gathered i need a s3o file type creater but other than that what type of info needs to be stored on a model and in what format? handy tutorials or readme somewere? ive done a little bit of NWN model creation ...