I don't meant to be a downer, but if you have to ask, don't do it. I'm serious. There are so many other factors that come into play that you really need to know what you're doing before attempting this type of thing.
Removing the screen, you could maybe do without modding experience, but I wouldn't go any further than that. Remember you will void your warranty and possibly ruin the mic (that kind of thing happens more often than you think). Basically you need to find your way into the inside of the grille and cut out the inside layer. That's all.
If you want to start learning, check out
http://www.prodigy-pro.com/forum and spend a few months reading everything there.