We are trying to use ODAC Xcopy to minimize the footprint of installing Oracle 11g Client. Currently, we use the Oracle 11g Admin install (~700mb). I've tried using the ODAC Xcopy, and that works. However, the only issue I now have is that I cannot set up an ODBC on the target system by just installing the ODAC Xcopy.

After installing ODAC (Windows XP fyi), I go to Control Panel-->Admin Tools-->Data Sources (ODBC)-->System DSN-->Add-->Microsoft ODBC for Oracle. I get the following error:

"The Oracle(tm) client and networking components were not found. These components are supplied by Oracle and are part of the Oracle Version 7.3 (or greater) client software installation. You will be unable to use this driver until these components have been installed."

I've tried editing the registry and creating the same keys that the Oracle Admin install creates, but still no luck. I'm not sure how to get past this. Any suggestions? Thanks in advance.