DBZ Budokai ripping problem

[Lexou Duck]

Well, I want to rip files from DBZ Budokai on GC.
I dumped the whole game, thanks to this app i found, and I now have access to the game's internal files.
Problem is, these have the most unsual file type.
Here, I uploaded the folder where i think the models are located(there are
others folders too, but those are mostly script, music and hex)
http://www.megaupload.com/?d=3P4PD2WL
Now, after observation, I think that the .act files are the models.
My question is : "Do any of you know this filetype ? Google doesn't !"


PS: I already have the textures, the models are the things bothering me.
PPS: If any of you know stuff about the other files, do tell. (.spx ; .pool ; .samp ; .sdir)