where to install with oscommerce?

[eluser]pbflash[/eluser]
[quote author="qwertyjjj" date="1329755453"]Presumably you could just add an include in the OSC PHP files to one of the class files couldn't you?[/quote]
I don't think so as CI would not be loaded so whatever CI functions, helpers, etc. needed by that class file would not be available. You would probably need to bootstrap CI into OSC somehow. Try searching for the instructions for integrating CI with Wordpress to see if you can do something similar with OSC.