remote access

[ravi]

Hi,
Can anyone please tell me how to connect 2 remote SQL
servers(7.0) which are on different networks, without
opening the firewall between them. VPN is also not an option.
Is it possible?
For e.g., connect sql server between company A and company
B which are located in diff. places, have their own
firewalls.

Thanks in advance.
RK
.