It depends on 2 things. What outputs the laptop has and what inputs the speakers have.
My speakers for example have 3 3.5mm jack plugs and they connect to the 3 audio connectors on my onboard sound. The only thing I had to do is alter the sockets on my onboard sound to outputs, there was a simple built in program that did this.
I cannot 100% guarantee that the laptop will do the same but it almost certainly will and therefore you should be able to use your 5.1 speakers.
Wait till it arrives as I'm almost certain it will work you'll just have to alter some settings.