Edit Money (Hex Edit)
Start a new career eg. (John Smith) and exit TW 2003.
Go to (USUALLY) C:\Program Files\EA SPORTS\Tiger Woods PGA TOUR 2003\Data\Career and open the players name you created (John Smith.plr) with a hex editor.
At offset 930 change the values to FF BB DF.
This should give you about $1.5 billion.
This should be more than enough to complete career level by increasing your Attributes. This also should not affect your winnings. i.e. your winnings still show the correct ammount you have won, but you will have $1.5 billion in the bank.