setting up F38310 with Directv

[HDTVNewb]

I recently picked up a F38310 now connected to digital cable. I want to get hooked up with Directv and while browsing the directv site i read the following...

<snip>
HDTV EQUIPMENT REQUIREMENTS

To take advantage of the latest HDTV technology and have access to over 225 channels of DIRECTV® programming, you'll need an HDTV set with a built-in DIRECTV Receiver or a DIRECTV High-Definition Receiver and a triple-LNB, 18" x 24" DIRECTV Multi-Satellite dish antenna.
<end>

I can't find these triple LNB's local as of today and no one seems to know they exist. radio shack, bestbuy, circuit city etc.

What does LNB stand for?

What would be the difference if I hooked up a dual LNB vs. a triple?

What is the best method to get my F38310 and 3 other sets hooked up in the house? Do I just need the dish since the set has a receiver built in?

Thanks in advance.

[Ratman]

Most stores sell oval dishes (19x24) with two LNB's (low noise block). All of these two LNB dishes can accomodate a third LNB (called SatC).

In order to get HBO-HD and HDNet, you need the oval dish with two LNB's. Now... if you want Showtime-HD, you have to get the SatC kit. Once you subscribe to DirecTV, tell them you want a SatC kit. They will ship one to you (for $8) for a 1 Year commitment to Showtime.

The oval dishes can be purchased at BB, CC, etc. or online.

For connecting to F38310, just run a coax from the dish to the "Sat In" on the TV. You're done.

To hook up other sets, you will need a device called a 'multiswitch'. This connects between the dish and the TV's. Kinda like a line splitter. Then you will also need to purchase a receiver for each TV. Subscription for additional receivers if $5 per month per set.

[HDTVNewb]

Ratman,

thanks. I wanted to make sure that the dish sold with triple LNB would be the same as if I purchased a dual and added the Sat c kit.