You have to be open to change and versatile in what you learn. Get your hands on everything you can to learn about computers and the technology. It is a very dynamic industry and they are looking for breadth of experience. I like figuring out challenging situations that come up, trying out new solutions for problems and making the overall environment better. There is always a better way to do something.
Technology is about finding ways to get the job done faster and more efficiently.
Training is a given. The big thing in networking is the Internet. That's the driving force. I see more and more connections to the Internet - everyone and everything. You can administer your job over the Internet.