I kind of dislike the attitude Raymond is showing here, to be honest.
Microsoft did a very poor job of disclosing these very relevant (at the time) facts to programmers back then. I guess they still hadn't really understood the power of having a well-documented/readily available platform.
I know that I was hunting for information on this particular topic - just having gotten dial-up Internet access for the first time in the spring of 1995.
(But hey, there were still a shining light compared to Creative Labs :) )