Get MAME: http://mamedev.org/release.html (I used the 64 bit version.)
Get the roms (pretty sure I cannot link them) and place them in roms folder.
Get most up to date Cheat file: http://cheat.retrogames.com/mame_downloads.htm
Only extract the first zip. Place the Cheat.zip folder in your MAME folder.
Go to Start > run > cmd > Change Directory to your MAME folder location.
“cd c:/users/ts/desktop/…/mame” then hit enter.
Then type “mame64 -cc” and hit enter.
This creates your ini file. (It resembles a lined piece of paper with a gear on the left side.)
Right click this and select Edit.
Scroll down for the Cheat option and set the 0 to 1. Save and close.
You will probably want to set it to windowed mode as well.
Run mame64. Run sfiii3n (it should be grayed.)
Press Tab to configure your Inputs. Press Enter and then the key/button you want to use. Be patient as it takes a second. You’ll want to set it up for both players so you can set up your training dummy.
ESC will go back a menu, and close it.
Tab also gives access to the Cheat menu. You pretty much want Infinite time and to give P1 and P2 infinite power/energy. Coin up and start practicing!
I have been trying to get a training mode for a while as I don’t have a console to play OE. Took me a while to figure it all out so I wanted to share in case anyone else was interested. I think it works fairly well.