Unless you have the Slimline-series dish, you will need to completely replace it in order to upgrade to SWiM technology. If you are unfamiliar with aiming a multisatellite dish,you might want to find a local expert to call. An expensive multisatellite meter is required and it is a multistep process.
If you wish to try it yourself, you can start with the basic dish pointing setup from your receiver's satellite setup screens and then proceed to use a multisatellite meter like the Birdog USB to peak the 101 and 119 signals from the dish.
On the other hand if you do have a Slimline dish with four lines, you can upgrade just the LNB (the front part) with ease, or you can add an external multiswitch. Adding an external multiswitch gives you the option to upgrade easily but is more expensive.
To change out an LNB you need the following:
DIRECTV SL5-SWM SlimLine Single Wire Ka/Ku Five LNB With Built-In Multiswitch (SL5-SWM) from Solid Signal
DIRECTV SWS-8 Satellite 8-Way Wide Band MRV Compatible Splitter (2 -2150 MHz) from Solid Signal
DIRECTV SWM-PI 29V 1.5A Power Inserter for SWM-8 (SWM-PI) from Solid Signal
Solid Signal Custom Cable Lengths RG6 with High Quality Solid Signal Connectors from Solid Signal (approximately 4' of cable for the dish, plus any additional runs you may need)
A 7/16" open-end wrench and screwdrivers
Note: in some installations, you may be able to use a smaller splitter or LNB. Call Solid Signal at 1.877.312.4547 if you have questions.
Go up to the dish and before you move anything, use the pencil to mark the position of all mounting and adjustment screws on the back of the dish. If you accidentally bump the dish, you'll know it.
Disconnect the LNB by unscrewing it and removing the coaxial cables. Feed the four cables back through the arm.
Connect the new, single cable to the LNB and feed it through the arm. Connect it to the splitter at the top. Run the four existing cables into the splitter. You will need a line to a power source connected to port #1 (the red port.) You can use existing lines or run a new one for this purpose.
Here's a diagram showing how it's done: