Place the ISO in a folder accessible by the emulator. Optimal Settings:
Hold to block or press to cancel certain animations. Ki Blast (Circle): Fire standard energy blasts. Charge Ki (L): Hold to power up your energy meter.
While some fighters are available initially, others must be earned through the story mode: Future Gohan
Guide: Dragon Ball Z: Shin Budokai - Another Road (Shin Budokai 2)
Set Rendering Resolution to 2x or 3x PSP for a balance of quality and speed.