Ok, got the scoop (literally!) and made the fresh pumpkin on Friday. The neck pumpkin is just fantastic, if you can get them. I think they are fairly localized to the mid-Atlantic region for growing.
The best part is that only the belly of the neck pumpkin has seeds/guts, the entire neck is all pumpkin flesh, so the yield is high for the effort. Here's how I prepped:
Cut the neck away from the belly. Using a vegetable peeler, remove the thin layer of skin from the neck. Cut the belly in half, and use a spoon to scrape out the guts/seeds/string. Then use the vegetable peeler to remove the thin layer of skin from the belly pieces.
Cut the pumpkin into 1 inch size pieces. Place in pot, cover with water, and bring to a boil. Boil until pumpkin pieces are soft...this is just like making potatoes for mashing. I then used an immersion blender to puree the pumpkin in the pan after I had drained it. You can also just use a fork or a potato masher.
One medium neck pumpkin yielded 6 cups for me. Very easy and worth the effort...I just made chocolate pumpkin pecan bread with this, will post the recipe now. YUM!!!