It's a good idea to get a repair manual if your going to work on your own vehicle, and it's never been easier or less expensive to get a high quality manual. Try http://bit.ly/mitchell_repair_manuals_online and you can have one in minutes, for less than $30.00. Read up on the job you are about to perform, it will show you what special tools you will need and you will be much better prepared to tackle any job on your vehicle.
If you're taking about the blower motor for heat and defrost open the hood and on the left hand side you'll see a large section the blower motor in located in there,getting screws out is the hardest part!!!