DVC guests ARE resort guests. There is no distinction whether you're staying at a DVC resort, the All Stars, or the GF. All resort perks such as the early entry, free parking at the parks, etc, apply to DVC. Also, DVC guests receive some perks that regular resort guests don't get, such as free Valet parking at all the DVC resorts. (tips are of course still appropriate), and a slew of other discounts including restaurants, golf, mini-golf, tours, and such.
All point transactions go through Member Services' 800 number. When you call, you press "3" for DVC reservations. You press a different number if you want to use points for the cruise, or a regular WDW or DL hotel, or outside the Disney stuff completely (such as II). You just follow the prompts on the phone till you get to the correct CM who specializes in the accommodations you want to use your points for.
Hope this helps