Welcome to the forum Cory,
Your problem may be the IAC (Idle Air Controller) located on the side of the Throttle Body (yellow asterisk). Someone else had the same problem and all he did was take it off and clean it to solve his problem rather than replace the part.
On a side note; do you happen to know if your timing belt and other related parts were changed. Everyone recommends (at the 100,000 mile mark) that the timing belt be replaced along with the belt tensioner. Since it's a time consuming job, most people also change the water pump (also wears out with mileage) and the regualr drive belts. It's an expensive job but if you have that kind of mileage and plan on keeping the car awhile, it's well worth it.