rokits

I currently have a laptop which has terrible sound coming from it. I first thought that it was just the speakers but when hooked it up to my desktop speakers or studio monitors (krk rokits) I discovered it must be the soundcard or something. Is it possible to buy an external one or something ...

Hi i currently have two sets of speakers. The only sound is coming from my pc so basically what i want is a little switch or knob on my desk that will let me turn between the two. Is there such a thing ? Thanks in advance ! :)