I wanted to point out there is someone named pixcalibur123 on youtube that gives a good walk through on the third and forth quests. Links are below.
3rd quest link- http://www.youtube.com/watch?v=y-gPzfwcS4c
4th quest link - http://www.youtube.com/watch?v=F-jlkZddqvg
I hope his videos help anyone that is stuck.