The blower motor is located under the passenger side dash. You have to remove the knee bolster and you should see the blower motor housing. Several screws (4 I think) to remove to get the black cover off and then you will have to remove more screws (4 more I think) and unplug the motor to get it out. It is not a difficult job at all to remove but you have to really contort your body to get too it. If you move the passenger seat all the way back it helps. Some old newspaper on the floor board keeps any old grease, dirt, dust, etc. from getting the carpet dirty.
Good luck - hope this helps.

P.S. - Did you check the strip fuse in the black box next to the actual fuse box? Sometimes it corrodes or develops a crack which will cause the fan to quit working.