ADO Database Delphi

Question:
I have Delphi4/BDE5 and I am trying to connect to an Oracle
server using the Oracle 7.2 client. Every time I try to connect
I get a "Vendor Init error". I have read the Developer
support Web pages and read the available documentation and
everything is configured correctly. Why can't I connect?
Answer:
The lowest version of the Oracle 7 client supported by BDE 5
is 7.3.x