hi jenny thanks for the quick reply, but thats not the computer. its the last one near the end of the game. its a 10 digit code. its after i go thru the big round vault,move thru the tubular vault entrance,thres a white rectangle on the wall. you click on it and its opens to a computer, you put a disk in and then it ask for a 10 digit code. i have already used extrema on one computer, and then i used sir walter birth date on another code. the only code i have yet to use is the code that says elenors brother [the chess master] or alphonso x, buts its not 10 digit.so if you can help me, i sure would appreciate it.