[djbaxter]

You could. The Glowhost version already has a place to input the key in the settings so you could try it without any changes.

In case it doesn't work that way, what I did was leave the old product, which also provided a place to add the key, installed but disabled. Never bothered uninstalling it on the grounds of "if it ain't broke don't fix it" but not sure if it's actually required or not.