If you want to secure a higher paying job in regards to being an administrative clerk or assistant, there are many community college programs that focus on these positions.
This kind of college program is not too expensive and focuses on just the skills you'll need in the office. You can also pick up some additional computer courses for things like desktop publishing, if you want to give your resume a bit of an edge. Having and administrative clerk who can multi-task is really what employers are striving for.
I feel that having even a certificate to your name will give you an edge in this competitive job market.