Hi dianna007,
I'm a horticulture student studying everythng from grass to
trees, birds and bees, so I'd like to try you're challenge. But no guarantees. I live in a competely different climate than you - up here it's cool and wet.
What kind of grass are you trying to rejuvinate? Does it have another name?
Do you know what kind of soil you have - acid, alkaline? Have you had problems with the grass in past? Do you fertilize your grass?
Provide me with as much iinfo as possible and I'll see if i can help. (Aren't computers amazing?)