RSA ACE/Server, Progress DB ODBC connection

I'm in the process of trying to enable an ODBC connection to the Progress database embedded in RSA's ACE/Server.

According to the version file on the server, I am running:
PROGRESS PATCH Version 8.3D10 as of September 24, 2001

I ordered the database client and the ODBC driver from Progress, installed, and attempted to set up an ODBC data source.

I initially received an error "Specified driver could not be loaded due to system error 126" when trying to test the connection. I found a tip on a messageboard which instructed me to copy prosql32.dll into c:\windows\system32, which resolved the error.

I received a couple of error messages which were resolved by setting appropriate environment variables:
DLC = C:\DLC
IDLC = %DLC%
PROCFG = %DLC%\PROGRESS.CFG
PROMSGS = %DLC%\PROMSGS
PATH = %PATH%;%DLC%\BIN

I then started receiving:
[MERANT][ODBC PROGRESS driver][PROGRESS]A PROGRESS database server cannot handle a non-Progress database connection. (2664)

I followed the instructions in Progress Knowledge Base article 17204. I am running the oibroker on localhost (it is not available on the server), and have the OID/OIB options hostname set appropriately. The Database Options tab points to the remote host. I am able to connect, but I am not able to authenticate. Error:
[MERANT][ODBC PROGRESS driver][PROGRESS]** Disconnected by the server, code 36. (706)[MERANT][ODBC PROGRESS driver][PROGRESS]** Server rejected login. (700)

The sdserv.lg file on the ACE server says:
14:31:07 SRV 4: Login by my_username rejected: secure client required.

Oddly, it is passing the username that I am logged into the PC with, not the username I entered in the login field.

I think this could potentially work if I had _prooibk (the OI broker binary) available on the server, but it's not there.

I'm out of ideas for now. Waiting for a response back from support. Hopefully they will have some ideas.

EDIT: Support confirmed that the server is requiring an SSL connection, and the SQL-89 ODBC driver does not support SSL. On to plan B...