remote access to many computers behind a firewall?

[Je C. <je...@ho...>]

Hello everybodyI'm sure it's not the 1st time but hey I'm no pro and I'm hopeless, I count on you :)
I want to get remote access from my home to my job. At job, I have like 20 different computers, half are connected to an ISP, the other half to another ISP.
Of course, all the computers from one half share the same public IP address, and each has his own local IP address.
How can I do to have the ability to connect to any of those computers with a tight vnc session?
Thanx a lot everyone
Jodie