In order to change the key bindings, you'll need to change them directly in the config file. This won't be difficult, but you'll need to get there first. To do this, you can go to your games library and right click on the game. Go to "Manage," and then to "Browse Local Files." (Thanks to White Wolf for this piece of information.)



Doing this should bring up the files for the game, including a file called config.txt. That's the file you need to edit.

Once you've found the correct file, you should be able to right click on it and select edit. The file should look something like this:



From here, it's as simple as swapping out the old binding with the new one. For example, the game tells you that to open the monopad, you press f. This is a typo. The actual binding is f1. If you want to change it to actually be f, you find the place in the file where it says f1 and replace that with key_f.
Unfortunately, it doesn't list what the controls DO, only what the control would be if you were using a Playstation controller. So you'll have to compare to the default control.





These screens listing the controls can be found in-game by pressing f3. (I've changed it to c for controls, personally, as well as changing f2 to t for transcript, but that's beside the point.)

Be aware that if you change the key bindings, the controls screen will not update to match, so if you forget you'll have to either try every button or open the config file again to check.

Thank you for reading, and I hope this was useful to you.