I did a pumpkin cider this fall that turned out awesome.
Here's the thread= http://www.homebrewtalk.com/f32/pump...-ideas-355320/
For raw pumpkin, I would core, seed, chop and cook in microwave for about 15 min. Then peel and cook as you wish (I suggest in a boil with DME and spices).
As you'll see in the thread, the pumpkin was super hard to clear, so when I do it ill put it in straining bags.
It's been my favorite cider yet, so enjoy!