yes KH1 works better than on the PS2 here :P
You can't rip models from Pcsx2 with 3D ripper dx, you always get 2D meshes wich are flat like pancakes.
But textures shouldn't be a problem.
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My System: C2D E6700 @3.4ghz | Asus P5W DH Deluxe | 4GB DDR2 800 | eVGA Geforce GTX 260 55nm SC-Edition
Tutorial: Hardware Antialiasing in PCSX2 (DX9 only)