remote access

[Paul Kaplan]

I'm trying to use vnc4viewer on an edgy box at work to connect to my 
electronically comatose dad's home XP box.  I have realvnc setup on the XP 
box and it works from my home boxes, but the problem is that our corporate 
network seems to be locked down tight (and I have no admin access nor am I 
likely to).  I can't ping any IP address that is outside the corporate 
network, so I assume that the firewall is blocking access.

How can I get through?  If anyone has any suggestions, could you also point me 
to some explicit instructions?
Thanks,
Paul