installed openvpn, not working

From: GS (globalswamy_at_hotmail.com)
Date: 10/28/05 

Date: 28 Oct 2005 04:15:18 -0700

I am sorry, I already asked this before, but I have to ask again, I
installed openvpn at both sites, it is not working. This is my
scenario:

1) one side is with cable modem with public IP addr, all local machines
are LAN
2) otherside is with ethernet to office with private ip address (class
C addr), connected to router and all local machines are LAN, all gets
internet, we know the gateway also we know the ISP's public ip addr,
since these people directly do ssh/ftp to the other office (but from
otheroffice couldn't login to the first office, since ni public ip addr
on local router wan port)

is there any problem with this private ip addr to office?. due to that
openvpn is not working?. any suggestions, Thaks