Unable To Upgrade From 9i To 10g?

I'm attempting to upgrade a 9.2.0.7 to 10.2.0.? (haven't run the patch set yet so it's at 10.2.0.1) I'm not sure if the listener is correct to proceed.

The platform is Windows x323 (server 2003)

>>I'm not an Oracle DBA, I stumble thru it in administering PTC's Windchill vault..

I am trying to run the Oracle DBUA and the documentation for the Upgrade Assistant instructs me to install in an OraHome that is separate from the existing. Done.

The Upgrading Guide then States:
"Run the Oracle Net Configuration Assistant
If you are upgrading from Oracle9i and a listener was not configured in the Oracle9i repository, run Oracle Net Configuration Assistant to configure the listening protocol address and service information for the new Oracle Database 10g database, including a listener.ora file. A version 10 listener is required for an Oracle Database 10g database. Previous versions of the listener are not supported for use with an Oracle Database 10g database. However, it is possible to use a version 10 listener with previous versions of the Oracle database."

Oracle Net Services Administration Guide, �10 states:

"Note:

A version 10 listener is required for an Oracle Database 10g database. Previous versions of the listener are not supported for use with an Oracle Database 10g database. However, it is possible to use a version 10 listener with previous versions of the Oracle database."

Here's what I've got: The Installation using the Universal installer for 10g ran w/o complaint, reported success. The installation type was Advanced>Custom per the PTC Windchill documentation. After the initial installation, the Oracle Net Configuration Assistant did not start automatically, as the documentation stated it would. (The documentation from PTC on Oracle is skimpy at best)

I launched the Network Config Assistant from the start menu in the new OraHome10g. When I tried to create the listener, TCP on port 1521, it told me this was already in use by another program. I could configure it, but until the conflict was resolved....

When I open the Net Manager, the path in the header bar of the frame is to OraHome92\network\Admin....YET, when I run HELP>About in the Net Manager it reports "Oracle Net Manager; Version 10.2.0.0.0 Production"

I had stopped all Oracle services when I ran the UI to install 10g. I have also since removed the service for the 9i TNSListener from windoze register (and restarted). Right now, there is no that shows running in Services.

??Am I actually OK to go ahead w/ the patch set, then run the Pre-Upgrade Information Tool then the Oracle DBUA?

Do I actually have a 10g listener setup?

But, the listener.ora, tnsnames.ora etc are all in the OraHom92/network/admin folder and nothing but the samples show in the OraHome10g/network/admin. Will the DBUA migrate these or should I manually transplant them into the OraHome10g directory?