Windows 95 had a native TCP/IP stack. Lan Manager had it from 1990 (a bunch of that expertise came from hires from Finland). And Windows NT had it in 1994. In '95 everyone was using TCP/IP and pretty much was standard at M$. I was there. It's true the browser didn't kick into high gear until '97 after Microsoft decide set-top boxes might not be information access solution of the near future. Microsoft was a little slow to admit that the Internet might win but eventually they came 'round and put some effort into it. Interestingly, both Gopher and Mosaic came out of Midwest universities in early '90s - great stuff, fun times.