Bath - also have a look at jobs.vic.gov.au - it's all jobs with the State Government and they tend to do the recruiting directly rather than through agencies. Huge variety of jobs and because you're dealing with them directly it's no biggie if you get a bad vibe and turn down a job offer - rather than turning an agency down a couple of times and then being put into the "too hard to please basket" IYKWIM.

Having said that, if you're looking for admin work then what about temping? That way, with short-term assignments it's no big deal if you don't like the place. Next week, you're on to something else. And it's quite exciting too. If you go through an agency, they'll want to test your typing/software skills as a matter of course.

Also look at the websites of your local council(s) - again, they put jobs up there that they don't advertise in general media. I'm thinking you might like something like working in a library maybe?

I'm also thinking that working in a not-for-profit might suit you where you feel that what you're doing is actually worthwhile so no reason why you couldn't approach them directly.