To install any of the updates the user MUST be connected to the internet. There is no way around this, and an internet connection is listed on the Installation Requirements.
These URLs should be added to any FireWalls safe lists:
installer.nemetschek.net (207.10.60.76)
download2.nemetschek.net (69.20.67.136)
These ports should be open on any filters/routers/firewalls:
Port 80 (UDP and TCP)
Port 75 (UDP and TCP)
If you connect to the internet via a Proxy Server, follow the instructions below. If you do not know if you connect through a proxy, consult your IT professional.
Once configured:
Windows XP: This file should go in the C:\Documents and Settings\(Username)\Application Data\Nemetschek\Vectorworks\(Vectorworks Version Number)
Windows Vista / Windows 7: C:\Users\(Username)\AppData\Nemetschek\Vectorworks\(Vectorworks Version Number)
Mac: This file should go in the User > Library > Application Support > Vectorworks folder as well.

If you cannot obtain this file from Technical Support, you can simply copy and paste the following into a text document with the name "VWProxy.txt":
proxytype http
address 192.168.1.71
port 3128
# Uncomment the line below to do local dns queries, instead
of on the proxy.
#dns local
# Username and Password for proxies that require it
#username testuser
#password testpass
http://support.microsoft.com/kb/135982
http://docs.info.apple.com/article.html?path=Safari/3.0/en/9299.html