I worked as an admin for a lot of years, mostly temping and contract work, and mostly in corporations. What I`m seeing these days is that the concept of "secretary" doesn`t seem to have a place anymore. There are administrative assistants and office managers, but even those terms don`t seem to describe anything.
The other problem is the move toward virtual offices, telecommuting, and virtual assistants. So you might want to start with some research into that whole field. One of our community members is very active in putting together an organization of VAs, and you can check out her site here: