He means Custom Menu System.

I think.

Anyways, tons of tutorials about this on the 'net, so finding a tutorial won't be hard. For tilesets, there aren't many to choose from online (that I've seen, anyways - and I've made a ton of CMS' in my day). You'll unfortunately have to make your own.

If you don't like the one you made or the thought of making one, I'm sure I could whip one up for you. Give me a PM with the colors/what else you want in it, and I'll give it a try.