Check out this article: How To Troubleshoot an ASP-to-Oracle Connectivity Problem.
My application wasn't an ASP app, but it does require the use of the Microsoft Oracle Driver's. However whenever I tried to access the Oracle DB using said drivers I would get this message on the server:
The Oracle(tm) client and networking components were not found. These components are supplied by Oracle Corporation 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.
Most irksome, but the tips in the article cleared the problem up, and now I get to leave the office! Hurrah!