ok, thank you, but could i use my serial number on two computers? or i would have to uninstall the first to use it on the second?

i inted to buy the ear master pro on a cd, but i would like to know if it's possible to install the progrem on two computers?
i have one stationary computer and a laptop (without cd drive).
could i install the progrem on both computers?

thanks,
dahon.

p/s: (sorry for my bad spelling)