Aw, well them go into the individual custom keys. For the W, you'll want R3, and for the ASD, you'll want R2. There is a place to add the Text, which is what you want it to say. There are many options for how you want to align the text, as well as font for it. I will warn you, this will be a bit expensive though. If you're just looking for different WASD cluster, there are other options. Look at elitekeyboards.com or qwerkeys.co.uk. They have some with may come out cheaper for you, though they probably won't be the same height (not sure about qwerkeys...).