It sounds like you need to get a new A/C adapter cord, and if you’re interested in looking to see if we have it for purchase you can look here: http://bestbuy.partsearch.com/. You could also call 1-888-BestBuy, and ask for our parts department and they should be able to order the adapter for you. I hope this helps!

Since your DVD player is working fine while plugged into another TV the problem is most likely in the TV with the lines on it. You could try plugging the DVD player into a different input on the TV, but if this doesn't work I would have the TV looked at by an authorized service technician. You could call the manufacturer, and they should be able to get you in contact with an authorized service center in your area, or you could call 1-800 Geek Squad® and they should be able to schedule someone to come out and look at your TV. If the TV is less than a year old the repair would most likely be covered by the manufacturer's warranty. I hope this helps!

Most of the Dreamgear 17-n-1 bundle w/charger model dgdsL-905 should work with the Nintendo DSi system. What won't work is the screen protectors, and the carrying case might not fit since the DSi is wider than the DS lite. The screen size on the DSi is larger than the screen on the DS lite, and this is why the screen protectors won't fit the DSi.

The DSi should have built in Wireless
802.11 capabilities, and you should have no problem connecting to a wireless network.

All previous DS games should be able to be played on the DSi system, but the DSi games that come out after the system is released will not be able to be played on previous DS systems. I hope this helps!

Without knowing exactly what accessory you’re looking for it would be impossible to say if there is an add-on that meets your needs. There are many accessories for the Nintendo DS lite system, and if you want to see what we sell you could look here: http://www.bestbuy.com/site/olspage.jsp?id=abcat0715016&type=category. I hope this helps!