I would be glad to research this for you.
Here are some posts with information on free skin cancer screenings:
Free Skin Cancer Screening in May
No More Excuses! Get a Skin Exam
There is a Road to Healthy Skin Tour provided by the Skin Cancer Foundation which will be in your area.....Thursday 8/30/2012
You may wish to also contact Las Vegas Dermatology. It seems that they have given some free skin exams on ocassion.
I would contact some of the local dermatologists in your area as well...they may know better as to where you might find a free screening. May is the time when many free screenings are given as this is Skin Cancer awareness month.
Let us know if you need more assistance.
Thank you for your question.