Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: how to connect to wifi
Document: Bought older version of this TV 3 yrs. ago. When an older TV at our vacation home bit the dust, we ordered this newer version. Amazon came through like always with the best price and quick delivery. Love being able to access internet with Wifi. This is an excellent TV--we love it!
It is, however, nice not to have another box to connect to my system. Overall, if I had to do it again, I wouldn't pay for the internet option.
If you decide to run this TV through an A/V receiver then you cannot play the internet features like Netflix through the receiver as the source does not turn off the cable portion of your TV. I decided I'm going to check out the Rocku XDS or Apple TV to regain these features and because they will utilize my Wifi network more efficiently.
and it walks you through how to connect the T.V. to your wireless connection. I used the T.V. to watch my four channels and some spanish stations for over a year before I finally plugged the link stick in that had been sitting next to the T.V. waiting to realize it's potential. Voila! We can no go to VUDU and rent a movie in seconds!
LN46C650.First, everything works fine when I hard wire the TV to the D-Link DSL-2640B modem/router.But when I try to connect wirelessly thru a ethernet bridge (Zyxel WAP3205) it fails atgateway ping in the network setup. Basically I cannot get the @internet working.The Yahoo!
Before buying the Samsung wireless LAN adapter for another $80, I went and bought Apple TV for $99. Plugged it in, hooked it up, and the thing worked from the get-go. I've been watching netflix ever since.So if you're buying this TV for the internet connectivity, don't. Just buy an Apple TV and connect it to your current HDMI-equipped TV.
After doing our homework we chose the Samsung LN46C650 46-inch 120 LCD HDTV. It is a super nice t.v. The picture quality is awesome and the price was right. The only complaint that I have and maybe it's my fault. I thought we'd be able to connect to the internet right away, what we didn't realize was that we had to buy a usb internet stick separately to be able to do that.
I received this TV on Feb. 25th 2011 and have now been using it for about a week. Overall I'm extremely happy with the picture and all of the TV's features. I especially like the TV's ability to stream content from my PC over the Wireless network in my home. I've also been using the Netflix streaming and have also setup the Yahoo widget to connect to Amazon on-demand.
***I will update this review, hopefully, in the near future. *** I purchased this TV last week and have already had some problems. The main issue is that I cannot connect to the internet. With the Samsung LinkStick, I am able to pick up my network, but then receive a message stating that "Samsung cannot find access point" or "connection failed." I've tried connecting various ways - no luck.
Samsungs Netflix app video blinks and sometimes crashes when fast forward/reverse, Samsung is refusing to admit fault just yet. I spoke to Netflix and they maid a good point that Netflix is not blinking on my PC and Mac and Netflix is not in conflict with other TV manufactures and Netflix is aware of the Samsung Netflix app. blinking I'm using a wired connection for my TV and PC and WiFi on my Mac.
Answer: For wifi, you need to plug in a Linkstick wireless USB adapter.