You can't arbitrarily get at source code on someone's web server. Do you think eBay would want you seeing the passwords to their database servers?

I think he's referring to an old bug on IIS that would allow you to view the contents of a file on the server. I believe it was a sample ASP that MS included to demonstrate come capability of ASPs.

I'm sure there are a few servers around that still have that enabled, but I'm sure most had that thing fixed 3-4 years ago.