You don't think it's a little late in the season to be making a pumpkin beer? You won't be drinking it until about January. While I'll drink a beer just about anytime, I find that my friends will practically NEVER drink seasonal beers out of season... so if you don't mind putting down pumpkin beers through the spring, go for it.
As for a recipe, just about any beer will work well but people are partial towards amber/red ales first and you'll occasionally see a pumpkin stout. I don't have time to write out an entire pumpkin beer tutorial because there's a lot of stuff to think about. You should just do some reading of all the pumpkin beer threads here.
In general, most people use a little extra crystal malt, canned pumpkin in the mash is easiest, low hop rates, some spice additions at least towards the end of the boil, and possibly some at the beginning.