If you have a hex editor you can get more money by editing the 
profile.sav file and change the amount of money.
First look at your amount of money then exit the game. Next use
your windows calculator to see what the hex value is for that 
amount. Then use a hex editor and search for that value in the
above mentioned file. When you find it change it into an "ff" 
and now you have 255 credits.