opportunities available in IT

Hi,
I wanted to know. I want to get into the networking part of computers. What job titles are out there as far as career opportunities. Could anyone recommend any websites that I could check out what avenues are out there i.e. Lan admin, network security. Also, what are the more lucrative careers in IT networking. To give you my background, I am a technical support analyst for a proprietary software company specializing in IVR Technology. I also am going to school for networking and will be taking classes for Microsoft 2000 Netware 5x cisco routers and unix. What is available for me????? Thanks, Gil