Yes, it appears I need to go back into the wiki docs and add in some additional information about how to go about further modifying your php.ini file to correctly point to the extensions directory.
So to answer your question, you'll want to modify the following setting in your php.ini:
In reply to:
; Directory in which the loadable extensions (modules) reside.
extension_dir = "./"
To something like this:
In reply to:
; Directory in which the loadable extensions (modules) reside.
extension_dir = "~/php5/lib/php/extensions"
That should work for you anyways 
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