You can either download an edited option file to play your game with - where someone else spent time and effort to fix the names and kits.
Or you can patch your game - this involves putting an 'image' of your original game onto your PC and patching it (with super-realistic kits, edited adboards, ingame music and lots more) before you burn it onto a CDR/DVDR and play it on a chipped or modded PS2.