If this is not a special requirement for using Oracle Client 10.2.0, I would recommend that you use Oracle Client 11. Client 11 is compatible with 10g, and 11g servers (and, possibly, 9i - do not remember before).
There is also a huge advantage that you do not need to use the Oracle Universal Installer, but instead you can simply run the batch file provided by Oracle to complete the necessary installation and uninstallation.
However, the instant client may not work for you as a developer, because it does not include tools such as SqlPlus or sqlldr.
You can download the Oracle 11 client using Xcopy Deploy here .
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