There are a bunch of helpful links on he left side of every page. One of them is for a time/temperature table.
For pulled Pork, I smoke between 225* to 240*. A very rough time frame is 1.5 hrs per pound. I wrap the pork in foil at 160* internal, and let the temp go up to 205* internal. Then I throw one more foil wrap around it, wrap that in towels, and let it sit in a cooler for at least 1 hr. I also preheat the cooler with hot water for 15 minutes before I put the pork in.
Here is a link to the table I mentioned:http://www.wyntk.us/food/smoking-tim...eratures.shtml
Also, at the top of this forum, you'll see a link to "sticky" posts. Follow that link, and you'll find a great tutorial about making pulled pork.
Good luck with your smoke!