When you visit keep in mind that there are two different DW788's, a TYPE 1 and a TYPE 2. Your saw will have the type listed on the motor. It's important you use the correct type when ordering parts because they are slightly different.
In the download section of the page you will find the exploded diagrams of the saw and the owners manual. These are handy to keep on hand so I suggest grabbing those while you are there.
Here is the direct link to the DW788 ServiceNet page. While you are there read the section titled "What is GRC?" It will explain service costs should you ever need them.