Slave to existing, standard light

[my_bluedog]

I am installing a new light which I want to turn on and off at the same time as anther existing light in the house.  I can access the existing light wiring, but I cannot run a cable between the existing light and the new light.

Can I use X10 to enable the new light to turn on and off at the same time as the other light?  Can I do it without having to use a special X10 switch?  I would like to keep the existing ordinary light switch if possible.