How can I add texture information to a jaw file? I can't find a jaw specification.
You can't. All that's supported is to add texture names behind each triangle definition but that's close to being useless. Support for JAW in jPCT is a relic and unless you are looking for a dead simple format to read a bunch of untextured triangles, it's NOT the format of choice. ASC and/or 3DS should be much better and if size is not an issue, maybe the XML-format is an option too.
Hope this helps.
Edit: I've uploaded all the meshes i have in JAW-format...http://www.jpct.net/download/jaw.zip
Thanks for your help.