I have these 5.1 speakers with rca plugs....the ones with red,white and yellow ones....so I was thinking was there any way to connect this to my laptop??
You need a 5.1 sound card like creative x-fi 5.1 usb.
if you want real 5.1 audio output from your laptop get ready to spend ~4000 for creative x-fi usb mentioned above but if you can do with fake 5.1 audio output then many options are available for 1000 & less.
Get this: Creative Sound Blaster X-Fi Surround 5.1 Pro 24-bit USB External Sound Card | eBay
is there anything cheaper than that?