the pak files contain a lot of the files for thaw. all the skater models and cas stuff are all in the models folder though. the skin files are the rigged models such as cas items and the pro models and pedestrians and such. the levels are in the pak files and are scn files. they have no extension when viewed in queenbee. all scn/skin files have an associated tex file, which has the textures for that file.
however unless you have knowledge on the formats themselves, you wont have any luck getting them
the tpro devs are able to convert the thaw models using tools of theirs. the only other way of getting the thaw models would be to screen rip them, but screen ripping usually doesnt work too good
a bunch of the thaw pros and peds have been ported to thug pro already as custom player models that replace regular models though