Some new codes I hacked, I hope someone finds them useful.
RWCE4Z
Williams Pinball Hall Of Fame
Reset Balls - Press "C" (resets back to the first ball of 3)
* 2836d060 bfff4000
* 0420d96c 00000002
* e0000000 80008000
10 Million Score
* 0420d95c 00989680
999 Credits
* 04212c77 000003e7
For the 10 million score and 999 credits, those are just examples I provided. You can change the actual values to anything you would like. If you are not sure of the proper value, use a decimal to hex calculator (windows calculator does this) - enter the desired value in decimal, convert to hex, and replace my values (00989690 (score) and 000003e7 (credits) respectively).
Enjoy!