I've got a:
Voodoo5 5500 using the 1.04.01 drivers (http://www.x3dfx.da.ru/
Only tried the demo so far, with the standard 3dfx ogl drivers the game run ok but no intro movie, with WickedGL it runs flawless
. Great graphics! i love the shadows, but the stormtroopers look like dorks
The renaming routine is not necessary (as already pointed out by some), just copy opengl32.dll from the Metabyte/Wickedgl directory to the GameData directory.
At the x3dfx forums (http://pub43.ezboard.com/fx3dfxfrm2
) they also suggest Voodoo5 users to add two lines to the config file (jk2config.cfg):
seta r_ext_fxt1 "1"
seta r_ext_texture_compression_fxt1 "1"
As far as I understand this makes the game use a compressed texture format (fxt1) best suited for Voodoo5's, but the game run fine also without these lines for me. If you have graphic trouble you might wanna try it.