Howto for configuring

[GRL]

Sorry, but I still need an answer, so I repeat my question.
Thanks.


Since much time I've been trying to undestand how to configure my home and
work computers to be able to use the many VNC programs. In details:
1) at home, I'm connected to Internet by an ISP in ADSL (dynamic IP);
2) at work, I'm connected to a LAN with its protections tools (mainly
firewalls) which, in turn, is connected to a governmental net which has
firewalls, IDS, etc. Inside the LAN of my office I have the IP address by a
DHCP.
Both computers are WinXP Pro computers and the office LAN is a MS, but at
office I go to Internet by a Linux server.
So, I don't undestand how I have to configure my 2 computers to reach each
other.
I apologize for my (dumb) question, but I'd like, finally, to undestand what I
have to do.
Thanks.
Giovanni