We have two zones for heat/ac with thermostats on first and second floor for those respective zones.

I'd like to be able to adjust or override the second floor controls while on the first floor (or visa versa) or to adjust both zones from the same place.

I would also like to be able to setback or reset both thermostats from our main entry/exit door (garage).

I realize that if there is a solution (other than x10 type of controls), I will likely have additional wiring to run and I'm oka w/ that.

Suggestions?

Its not only running the wire it is the major cost of going to a semi computer form of control.

Call in a professional and tell them what you want to do then let them make suggestions.

This can be done but usually the costs run for two systems and accessory ports about 7,500.00. If it was more than this I would get a second opinion.