What age is too old to be a physical therapy assistant?

I have taken courses in anatomy and x-ray lecture. I have been interested in physical therapy assistant for many years. However, I was not able to go to school yet. Am I too old to go back to school for physical therapy at the age of 59 years old. I will be 60 years old in Jsnuary 2011. My name is Laurie Bugnacki. I have a Dell Computer.Windows Millenium GenuineIntel(r) Celeron (tm) processor- 696 MHz Hard Drive PASS
Yor system: 11851 MB Free Space on
System Drive(C:)
Your system: 11851 MB Free Space on Largest Drive (C:)
Memory PASS The system 191 MB RAM