During the installation of Enterprise CA on Windows 2003
stops with error:

An error was detected while configuring Certificate
Services. The Certificate Services Setup Wizard will need
to be rerun to complete the configuration. Certificate
Services setup failed with the following error: Windows
cannot find the network path. Verify that the network path
is correct and the destination computer is not busy or
turned off. If Windows still cannot find the network path,
contact your network administrator. 0x80070033 (WIN32: 51)

Wanted to post the solution I worked through to assist
others in the future. After troubleshooting this for
awhile I thought that this was being caused by a failed
attempt to reach an AD Server even though the error was
somewhat generic. All DNS possibilities were looked at and
nothing was incorrect, although this was a multihomed
server running ISA. I temporarily disabled the Internet
NIC and the installation was successful,however I am
investigating Event ID 103 Warning which appears to be the
only event that this change produced.

Hope this will help someone in the future.