You just need to replace the digitizer, which you can get for about $4 shipped on eBay. You'll need a small Philips screw driver and a tri-wing screwdriver, so you're probably gonna spend anther $5-6 on that. I repair DS systems all the time, if this seems like something you're uncomfortable with, you can send it to me and I'll be happy to do it for you. I'll only charge a small fee on top of the digitizer cost (sometimes it's easier/more beneficial to do the LCD too, which again, is dirt cheap). I already have all of the tools. USPS shipping would be around $4 each way (maybe less). Let me know if it's something you're interested in, I've literally probably done this about 30 times.