Enter the password at the password entry screen (found on the game select screen) to reach the desired level. Note that there is no password that lets you start on the final level, Level 10.

Effect	Password
Start on Level 2	Q113PMQ
Start on Level 3	PNMTCZS
Start on Level 4	X244DDS
Start on Level 5	PLFDKF0
Start on Level 6	VWYHDN3
Start on Level 7	KJJ35RN
Start on Level 8	NMW330Z
Start on Level 9	LBXX55S