To set the keys MMOViper will use, click the "Options" button on the main screen.

Then click the "Options" tab at the top

To map your keys follow the instructions below:

The next example is for a movement key and will work the same for all keys:

First click the "+" sign next to "Movement" this will open up the keys that involve movement.

Then click in the space next to "Autorun"

This opens a control where you can select the key you use for this option, in this case it is for "Autorun". When you have selected your key or combination of keys click the OK button.

I selected "R" for my key and it now displays in the space next to "Lock Run Forward". Repeat these steps for the rest of your keys.