How do I program new remotes?

I need advice programming a set of new remotes. My SVX came with one worn key and no remotes. Does anyone know where to get accurate programming instructions for new remotes? I cannot find this anywhere in the service manuals-just info on reprogramming existing remotes. I followed some instructions I found on SVX world and after repeated trys I can get the horn to beep three times and security module to click away, but pushing the button twice on each remote doesn't program the remotes? Sometimes when pushing the remote button, the horn will beep, sometimes it will not. These are factory remotes and came supplied with batteries. I'm assuming they are fresh. Does anyone in the SVX ether have suggestions, short of a trip to the dealer?