You can almost make out some images in TextureFinder.
In a hex editor they look identical to these:
viewtopic.php?f=18&t=10545
Both games were developed by The Collective.
Are they encrypted, compressed, swizzled, twittled ... ?
Any help is appreciated, thanks!
edit
the Xbox version of this game uses *.stx textures which are just *.dds with a custom header.
the Xbox *.pak files contain a bunch of *.stx textures and they usually follow the model (msh) they belong to.
i can't unpack the *.pak files for the Xbox version, but the files are uncompressed and can be pulled out by hand.
the PS2 version *.pak files can be unpacked using offzip but no one knows how to convert those models and the xbox textures are higher res anyway so it is rather pointless.