Moving PremiumPress AT theme to become main website

I am trying to fix something that someone else has created. I have a site http://www.racingpigeon.com with WordPress on it. There is a menu link for Auctions which launches PremiumPress Auction Theme on this location http://www.racing pigeon.com/auctions basically like two separate websites. I would like the PremiumPress Auction Theme to sit directly off http://www.racingpigeon.com how do I move from a sub folder back to the main folder, I have tried a number of things and failed 🙁 glad the backup facility works lol!