C.M.
just so you know there is also something called Confusional Arousals. They are related to night terrors - do a little research to find out what best describes your situation.
My daughter grew out of confusional arousals at age 5 1/2 and seemed to suffer from them when she was overtired or running a fever. She was truly asleep throughout the whole ordeal and I didn't try to wake her up - that seemed to make things worse. I would coax her back down on her pillow by patting it and soflty telling her to lay back down and "go back to sleep". Sometimes I would have to repeat this 4 or 5 times before she would settle down.
By about the time she began to outgrow them, I could anticipate them on nights where we were very active that day and she was tired or after a couple nights of going to bed after her bedtime.
Now she just talks in her sleep every night and sometimes sits up and crawls around on her bed. I wouldn't be surprised if someday she starts sleepwalking. Her dad used to sleepwalk as a kid.