Just do like Circo suggested. Use any machine in your house thats windows 7 (or 8) install the bare HyperSpin and set up all of the systems in HyperHQ then set up HyperSync and let it do its thing and then copy those over to your other PCs and gaming machines. Don't worry about installing emulators or roms as they are not needed to download all the art you need.
Just make sure you update the databases when you set up your systems in HyperSync lol .. at first I couldn't figure out why it wouldn't download anything