It's the Midwest Gaming Classic. It sounds like a classic car show....stuff for sale, if you're looking to buy, stuff to look at, games to play, etc.
It's gonna be at the Brookfield Sheraton. Dunno where you're gonna be coming from, but if I remember correctly, it's right next to Brookfield Hills Golf Course. If you need directions, tell me where you're coming from, and I can give you better directions.