Being a webmaster would be my last choice. Unless you are selling something, being a webmaster has been EXTREMELY unprofitable since the Online Advertising business went down the drain.

Programming is a very broad topic, as there are many types of Programming. I'm told that getting a job in the gaming industry is very difficult, but if you wanted to do it, it would DEFINATELY help to have at least 4 years of college education on the subject. The leading academy for game programming is Digipen (more info at www.DigiPen.com). There they would teach you the main programming language for games: C++. The salaries range from 35k-135k a year.

I dont know much about being a sysadmin but I imagine that it would have the highest pay.

Anyway I hope this helps you in determining which career path to chose.

Good Luck =)