Well for me:
When I grew up my parents (more specifically my mother) embraced that I was more feminine than either of my two brothers. Now that was largely because my mother didn't have a daughter and she let me know I was "supposed to be" the daughter. So I got treated more as the "delicate" one and they didn't give me any problems when they did catch me dressing. I was also treated by my friends as being "genderless" (as they put it, he's not a male, he's not a female, he's an 'it,') and my older brother took care of any problems I might've had with others since he was on my school's football team. Now at the time, this resulted in I didn't have a concept that anything was wrong, and grew up not depressed about my gender.
Now because of this I grew up pretty healthy mindsetted until I hit college and that's when I actually did start hanging around "men" (I wound up going to a school with a M/F ratio of 5:1.) That's when I started realizing something was seriously wrong. Prior to that, my only awareness of ->-bleeped-<- was the occasional news story about someone trying to RLE on the job and getting problems because of it, or perv-filled chatrooms on AOL where it was fairly rare if someone in there was TS. And around then I started to find resources on the web. Suddenly I was surrounded by a bunch of guys that loved looking at porn on the web, and talking about sex non-stop, drinking, screaming out windows, etc.
So that's when I realized something was horribly wrong and started searching around the budding Internet. But at the time, I had either the lighter sentence "maybe I'm gay" or the harder sentence "am I a transsexual?" Reading on the web at the time, either there were people that were stealth and had been outed, or people struggling hard with their transition. If anything the early Internet community was not a strong force of support that it is now.
Now as the Internet has grown with more support available and information, so did I grow to accept myself almost directly by ratio in my opinion. If the Internet was the way it is today I would've most certainly been able to accept myself much faster. On the other hand, if the Internet didn't exist I probably would've had no concept of what TS was, and would've assumed that my position in life was to just keep bouncing between different peer groups as I did and not quite been able to figure out why I didn't fit in right. I always managed to do things alone up until I accepted myself, and I'm sure I would've just continued to "fit in" instead of actually fitting in.
Would I have transitioned without the Internet? Who knows. I do know that it would've been much longer in the future and I wouldn't have avoided marriage out of "fear" that I might be a transsexual from having the information available to me early on. If anything having the knowledge from the budding Internet early on caused more problems in my life than it did good before the dam broke.
-Kit