Click the "Inside EA" button at the main menu. Place the pointer over the "Credits" button to highlight it.

Effect - Code
Unlocks all cheats - ulockall
Big bat - bigbat
Super batsman (easy to hit 4s and 6s) - sbatsman
Ball bounces instead of rolling when hit - bouncyball
Sharjah 4 team tournament - sharjahtmnt
Fielders fumble and drop ball frequently - butter
All-Star team - ulockastar
HB Studios team - hbstudios
All-Time England team - ulockate
All-Time New Zealand and South Africa teams - ulocknzlsaf
Fielders turned into fat umpires - fatfielders